One of the biggest fears while being in a relationship is getting cheated on and doubting your partner's faithfulness. How to know if she cheated? If you're at this point, it's good to be clear that your suspicions are valid. It's never pleasant to suspect your partner of cheating; that's why before you confront her, analyze her behavior based on our gathered signs she cheated on you last night.
How Do I Know If My Girlfriend Cheated on Me
Here are some alarming behaviors that you might want to take into consideration. If her actions only fit with a few of these signs, you should probably consider what might be worrying her; maybe it's something at work, an online stalker, etc. However, if she's very sneaky and seems to have all the signs she cheated in the past, you should consider her faithfulness.

Your Girlfriend's Behaviour Has Changed in Alarming Ways
If your girlfriend suddenly starts to be more aggressive and irritated, even because of little things, something is definitely wrong, as these might be the characteristics of a cheating woman. When in a long relationship, people get used to each other, and their actions get more predictable.
If you noticed that instead of reacting in a usual calm way to a certain situation, she gets into a fight or looks for ways to hurt you emotionally, there might be a reason for that. She may be looking for ways to get more distant and then eventually break up or just leave.
She's Spent the Whole Day Texting Someone and Seems Dismissive When She Looks at You
Cell phone signs she's cheating include spending more time on her phone, hiding it, changing the password, and spending time on the phone rather than with you.
Psychologist Dr. Robert Weiss talks about the possible actions of a cheater: “Cheaters tend to use their phones and computers more frequently than before and to guard them as if their lives depend on it. If your partner's phone and laptop never required a password before, and now they do, that's not a good sign. If your partner suddenly starts deleting texts and clearing their browser history on a daily basis, that's not a good sign. If your partner never relinquishes possession of their phone, even taking it into the bathroom when they shower, that's not a good sign.”
She's Talked About Taking a Break from Your Relationship or Moving to Live with Her Mother
If you hadn't had any problems in the relationship, and she suddenly wanted to take a break or move out, this might be a sign she cheated. This is probably her plan of breaking up with you without admitting to cheating, and she'd rather make up another reason to break up.
She's Making Plans to Go Somewhere Even Though She Has a Day Off, and When She Returns, She's Distant and Won't Be Intimate

When in love with someone, you want to spend all your time with them, and yes, in long relationships, that passion for spending every awake minute with each other dims; however, spending quality time together is always great.
Have you noticed that your girlfriend is constantly going out late, and even when she comes back, she seems to ignore you? This might be among signs GF is cheating and a distance is growing between you two. That doesn't mean she's unfaithful, but if she clearly shows no interest in engaging with you as usual, there must be a reason behind this change in her behavior.
She Doesn't Seem Present and Won't Answer Your Questions or Respond to Your Guesses
Characteristics of a cheating woman include her being distracted, distant and closed. If you have noticed all of these, try to talk to her, discuss your worries, spend more time with her, organize a romantic date or trip, etc. If she won't answer your questions, sways away from hugs, and just ignores you, there is a high chance something has happened that made her distant from you. According to family therapist David Klow, “If your partner's actions start changing, then it might be a sign of infidelity.”
Her phone is on silent mode.
Although some people simply hate phone sounds and vibration, your gf may not be one of them. If earlier she used to always answer every call and reply to any message immediately and now she doesn’t do so, she’s probably got that you suspect something. Now when she receives a message, she waits until you leave or looks for the lonely place for chatting, instead of replying right away.

The silent mode comes out of nowhere and may not belong to the signs she cheated on you last night. But it can mean she’s got a relationship with someone else for a long time so far.
The only way to test this theory is to take a look at her messages. Try installing a spy app on her phone to get all the notifications and check the texts in social media.
She's Even Started Calling You by Your First Name Instead of Your Nickname
A loving girlfriend is caring toward you and most likely calls you cute names. It's a bad sign if she becomes cold toward you, not exactly a sign that she is cheating, but it definitely implies that there are problems in the relationship. Before accusing her of cheating, try to talk about what's bothering her and how you can both work on the relationship and romance.
You've Noticed That She's Closed Her Social Media Profiles and Removed Your Boyfriend's Status
Another common sign your girlfriend may be cheating is when she suddenly becomes quiet on her social apps and deletes all photos with you. She might still be posting pictures of herself, particularly sexy pictures, so that other men reach out to her. But when she doesn't mention having a boyfriend as she did before, then it might serve as a sign of her relationship with you changing.
She Smells Like Men's Perfume or Cigarettes, and You've Seen Scratches, Bruises, and Redness on Her Body

Don't ignore the physical signs your girlfriend just slept with someone else but confront her on them. Ask her why she smells like men and why she has scratches and redness on her body. These little details may be the signs she's cheating at work if she stays working late, especially if she has a manager or a colleague who she's mentioned previously. If she doesn't give a valid explanation for that and avoids the conversation, then there you have it, clear evidence that she is cheating.
She Seems Preoccupied and Is Constantly Lost in Thought, Like She's Experiencing Flashbacks
Your once attentive girlfriend that used to love listening to your stories now can't hold a conversation and is disconnected from you? There is a high chance your girlfriend likes another guy and is lost in her thoughts about him. Some signs she is thinking about someone else are when she walks around smiling for no reason, calling you another name by accident, and times when she doesn't even hear you because of how dreamy she is.
You've Even Stayed Up All Night Talking on the Phone About Cheating
You might have had a conversation with her before, a conversation about cheating, but it was all ruled out back then. However, if you keep noticing different signs she has someone else, and now when you bring up the conversation, she ignores you and blames you for making stuff up, then she probably doesn't even care about you anymore.
Her Biological Scent Has Changed, and When She Comes Home, She Immediately Runs to Take a Shower
Physical signs she is sleeping with someone else can be noticed by her hygiene. Every person has their biological scent, and it consists of their environment, what they eat, where they spend time, and who they intertwine with.
According to Dr. Phillips in Bustle, “If your partner comes home and jumps right into a long shower, they may be washing away any evidence of cheating.” If your girl had a long day at work, you can't blame her for wanting a shower, but if she runs in the house without letting you get close to her, she probably has somebody else's odor on her.
She's Started Taking Calls in Another Room and Closing the Door
Surely everyone pays a lot of attention to their phone, and nowadays, people take calls and text back almost instantly. However, if you know that it's not work-related, and she leaves the room to take a call, this may be a sign of something going on behind your back. This is also among the signs your girlfriend likes another guy, as she spends more time communicating with others rather than you.
According to counselor and therapist Dr. Tracey Phillips, hiding things from you on their phone may be a sign she has someone else: “They could be trying to avoid receiving any questionable calls or texts in your presence.”
She's Informed You That She's Planning to Take a Vacation by Herself
What once was a fun and intense relationship turned into cold talk and ignorance. Has your girlfriend left you out of her plans, is constantly going out with “new” friends, or maybe is even planning a vacation without you?
These are serious signs she cheated or has been cheating for a while now. She's more interested in her new friends and possible affairs than you but doesn't want to hurt your feelings, so she chooses to travel and have fun with friends rather than break up with you.
She Pushes You Away
Figuratively. She’s distracted, distant, and closed. You try to do something about it, like talk to her, hug her, make her a present, or beg her to tell you what’s wrong. But she doesn’t tell you anything. You think there’s something wrong with you and start digging deep within yourself. But the only thing which is wrong about you is that you can’t realize she’s not loyal.

There are many signs she cheated on you last night. Keeping secrets and hiding something from the other half (so to say, you) is the main one.
If you deal with a perfect liar, you will hardly guess they’re hiding something unless you know them too well. Let’s hope your girlfriend is not one of them. If she’s not, just try to talk to her – stay calm, open, and understanding. Sooner or later, she’ll confess.
What To Do If Your Girlfriend Cheated on You
When you see signs she cheated on you last night or signs of past infidelity, you should always start with a conversation. The conversation doesn't frankly need to be about cheating, and you can beat around the bush and ask her questions about why she is acting certain ways.

The conversation can put many things into place; for example, she might reveal a reason for her behavior (that can be anything from relative problems to getting bullied). Or if she gets angry and avoids the conversation blaming you for false accusations, then it's probably best you consider the following two ways to be sure of her cheating.
Consider Taking a Test If Your Girlfriend Is Cheating on You
Her behavior and your suspicions might be getting to your head too much. For a cold-hearted analysis, you may take a quiz online or design one yourself. The quiz should have a clear question with a few clear answer choices.
Here is an example of a few questions:
Will she let you look at her phone?
- She started hiding it from me.
- She was always possessive of her phone.
- She allows me to use her phone without being suspicious or worrying about it.
Do you fight?
- We are constantly arguing, even over little things.
- She gets moody sometimes; however, she gets over it quickly.
- We get along great.
Do you have thoughtful conversations?
- We can go without having a good conversation for a few days.
- Just exchanging the basic everyday phrases, not getting into deep discussions.
- We talk for hours every single day.
Did she change her style?
- Yes, she changed her wardrobe completely.
- Yes, she made some minor changes to her looks.
- No, no changes.
Does she avoid going to family events with you?
- Yes, she tends to be more distant from my family and doesn't talk much about hers.
- Yes, she comes up with different excuses.
- No, she actually gets me into going to these events.
Did she start working more?
- Yes, she's been getting more shifts.
- There are some days she gets later from work.
- No, she works as usual.
Does she seem to be more worried about things and getting more anxious overall?
- Yes, she seems to be always in her head overthinking.
- I haven't noticed any changes.
- Yes, it seems like something is bothering her, but she doesn't talk about it.
Now, this is just a small example, but just from this quiz, you can make conclusions if she cheated on you. If most of your answers were number 1, then there is a great chance that she is cheating. If you got answers by the number 2, then your probably getting way ahead of yourself; your girlfriend might just be having mood swings. And if you answered number 3 mostly, then there is no need to worry about your relationship.
Monitor Girlfriend's Phone for More Info If You Suspect Infidelity
Do you have a reason to believe your girlfriend may be cheating but do not have enough evidence to confront her? Nowadays, when most of our lives revolve around our phones, there is defiantly some evidence of it on her phone, like a suspicious message, contact, picture, or doubtful location.
You can monitor her device by using software known as a cell phone tracker. The software can be installed on the suspect's phone and, without a doubt, catch evidence if you are noticed any signs she cheated on you last night. Such software can monitor text messages, call logs, galleries, live locations, social media apps, web searches, and more.
FAQs
How to tell if she cheated on vacation?
Vacations are the best time to relax and let yourself forget about all your worries. Even though there is no way you can tell for sure, you'll notice signs of guilt like her avoiding direct talks with you, her setting a new password on her device, and being blunt with details about how her vacation went.
How to ask your girlfriend if she is cheating?
At first, you should try talking to her about some made-up situation about friends who are cheating, do it in a very casual way, and try to catch her true reaction, look for signs she cheated and feels guilty. If you are sure that your partner is a great liar and will never admit cheating, consider using a monitoring app.
Once you gather enough information, you may then confront her by showing evidence or just end things without having a fight but just explaining that you know about what's going on and walk away.
Why do girls cheat?
Every woman and situation has its own set of factors as to why girls cheat. Nevertheless, experts say that there are three main reasons why they do so. The first would be a lack of love from a partner – your love for her might just not be enough. The second reason is a desire for sexual variety. And finally, it may be the environment and using mind-altering substances like drugs or alcohol.
How to tell if your girlfriend is cheating on you for sure signs?
You can tell if your girlfriend is cheating on you by just being attentive. Look for various signs and changes in behavior. For example, she might be avoiding you, spending more time on her phone, making plans without including you, and other situations, where she excludes you.
How to know if your girlfriend is cheating over text?
If you are suspicious of your girlfriend cheating on you over text, pay close attention to her phone for signs that she's cheating. Is she constantly texting someone? Does she leave her phone in the room with you alone? Has her password changed? Does she get mad when you bring up her being on her phone too much?
What does cheating do to a woman?
Women who cheat experience a whole range of emotions – anger, shame, anxiety, embarrassment, and regret. These psychological facts about cheating woman can definitely influence their mental health and overall well-being. While after cheating once, some women feel remorse and pain for what they have done to their partner, others feel an attachment to cheating, and they want to do it more and with other partners.
What are the signs that she cheated and feels guilty?
You can tell a woman cheated and is guilty about it if she starts acting overly loving, fakes self-esteem, or acts nervous and restless around you. Other signs a woman is cheating but feels guilty include absence of complaints, bursting into tears, and encouraging you to hang out with her more.
Final Words: Can a Cheating Woman Change and Be Faithful
If your gut feeling is telling you that your girlfriend is cheating, it doesn't necessarily mean it's true. Before making any impulsive decisions, let yourself have a few days to calm down. After experiencing all the anger and frustration, you can make a decision to discuss the situation and eventually break up.
Talk about your worries and thoughts with her. If she sincerely cares about this situation, admits or denies your accusations, and takes responsibility for her behavior, you might work this out and make your relationship even stronger. However, if it doesn't work, the best decision may be to call it quits and move on.