Infidelity is one of those things people hate to think about but sometimes constantly fear in a relationship, often without any good reason. But that doesn’t actually mean it doesn’t happen, as the internet shows.
In case you wanted to pursue other folk’s tragedies, we’ve collected some of the worst cheating stories from across the internet here. Get comfortable as you read through, upvote the ones that surprised you the most and be sure to share your own thoughts and tales in the comments down below.
#1

I found a travel blog from a girl that had photos of my boyfriend in bed and details about their time together. The blog also mentioned that they were long time travel friends that had met up in various countries. I had never heard of this girl during our 7 year relationship.
3points
#2

Ex girlfriend cheated on me with my twin brother and tried to claim she couldn't tell the difference.
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3points
#3

While my mom was in the hospital, I went back home to get my baby because I had rushed out of the house quickly in a panic and left him with his dad (my husband) but knew he would be waking soon to eat (he was breastfed). Husband was asleep but I noticed a Snapchat notification of his phone, I was already in a 'don't care' mood so I checked it & some girl had sent him a full frontal spicy pic. I screenshotted it and sent it to myself from his phone so he’d know I saw it.
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3points
#4

Not mine but still.
Knew a girl, long story short, a while ago she slept with her friend after a drunken night out, she regretted it and it was a 1 time thing but all their friends knew (they were all out together). Her friend had a gf at the time so they all agreed to just keep it hush hush.
That gf is now his wife and they still all hang out, the wife has no idea to this day.
Knew a girl, long story short, a while ago she slept with her friend after a drunken night out, she regretted it and it was a 1 time thing but all their friends knew (they were all out together). Her friend had a gf at the time so they all agreed to just keep it hush hush.
That gf is now his wife and they still all hang out, the wife has no idea to this day.
3points
#5

It’s funny coz it happened exactly 18 years ago. I had a best friend that lived on my same block. We went to school and high school together. We also went together to college but I dropped out and started in a different college after the first year. We used to play video games and hang out almost all the time. He was like family. I had a girlfriend back then and was my first serious romantic relationship. We had been together for a year but we were having fights and the relationship was becoming toxic. On my bd day I was at class and decided to text her to check if she wanted to meet. I got no answers. I also texted a cousin but he was busy and texted my best friend but he didn’t answer either. I tried calling and nothing.
I’m a pretty chill person so I just decided to rent some movies, I bought some snacks and was gonna spend the evening chillin by myself at home. We all lived in the same neighborhood and as I was crossing the street to enter my building I saw my friend’s car passing by with my girlfriend on the copilot seat. They were ignoring me the whole day and spent the day together, during my bd.
It was actually pretty bad for my mental health since I didn’t expect my best friend to do something like that with my first love. She also messed up of course. They tried to get out of the car but I just stormed into my building. The first thing she texted me was “please don’t be dramatic” and my friend said they were doing a cake for me LMAO it was a lie of course. I ended up going to a therapist.
I’m a pretty chill person so I just decided to rent some movies, I bought some snacks and was gonna spend the evening chillin by myself at home. We all lived in the same neighborhood and as I was crossing the street to enter my building I saw my friend’s car passing by with my girlfriend on the copilot seat. They were ignoring me the whole day and spent the day together, during my bd.
It was actually pretty bad for my mental health since I didn’t expect my best friend to do something like that with my first love. She also messed up of course. They tried to get out of the car but I just stormed into my building. The first thing she texted me was “please don’t be dramatic” and my friend said they were doing a cake for me LMAO it was a lie of course. I ended up going to a therapist.
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3points
#6

Wife of 13 yrs. I only knew about two men, suspected another, turns out she sent an entire list of the men she was sleeping with to a friend. Bragging, I guess.
She said once "I didn't know it was wrong, no one ever told me".
We were raised Mormon...
She said once "I didn't know it was wrong, no one ever told me".
We were raised Mormon...
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3points
#7

My ex-fiancée and I were working through some issues but trying to get back together. She asked me to babysit her dog while she met with her mother's real estate agent. Turns out it was actually a first date with some like D level/internet famous person and she was hedging her bets. I knew something was up and she used that to try and turn it back around on me for being untrusting. He posted a picture commemorating their first date years later on the exact date she had lied about it and accused me of being unfairly distrusting. I think they are married now.
It did permanent damage for me. I am incapable of doubting my instincts when I think someone is lying to me. And I was a cynical guy to begin with. I just no longer give anyone the benefit of the doubt. I have found it's easier to not care. Not a great recipe for forming and building new relationships.
In therapy I learned that I simply cannot ever trust myself or another person again to love them or let them love me. Even when people think they love me I have dismissed them entirely and lose interest. She used to joke that I was bitter when we met and I always joked that I was jaded but not bitter.
I am bitter now. I try to keep it to myself.
It did permanent damage for me. I am incapable of doubting my instincts when I think someone is lying to me. And I was a cynical guy to begin with. I just no longer give anyone the benefit of the doubt. I have found it's easier to not care. Not a great recipe for forming and building new relationships.
In therapy I learned that I simply cannot ever trust myself or another person again to love them or let them love me. Even when people think they love me I have dismissed them entirely and lose interest. She used to joke that I was bitter when we met and I always joked that I was jaded but not bitter.
I am bitter now. I try to keep it to myself.
3points
#8

I was groomed and had a secret "relationship" with a older guy. We had been together for around 2 years, so I was 17 by the when I found out that he was having an affair of some sort with my stepmother.
He denied and said she was after him but he didn't want anything with her. I tried to believe but it was too obvious. He deleted everything from his phone but I had access to her phone and she was not as smart as him. She saved his number "V. M. L. R", his initials.
During school break I went to my grandma's abroad for few weeks, broke up over the phone and when I got back I learnt that my father caught them together at a "date".
He denied and said she was after him but he didn't want anything with her. I tried to believe but it was too obvious. He deleted everything from his phone but I had access to her phone and she was not as smart as him. She saved his number "V. M. L. R", his initials.
During school break I went to my grandma's abroad for few weeks, broke up over the phone and when I got back I learnt that my father caught them together at a "date".
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3points
#9

Found out my ex had been “working late” by seeing his car in the parking lot of a restaurant while I was on a date with my friend’s boyfriend… who was also “working late.” They were at the same table, sitting together, holding hands. Two relationships ended over one plate of nachos.
3points
#10

My first girlfriend, at 18, decided the best way to dump me was to cheat on me with all my friends. 3 I knew of, suspect another 2. So, lost my girlfriends and my friend group all in one lump. I still have trust issues 40 years later.
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3points
#11

I am a divorce lawyer - I have heard it all. One particularly excruciating story was a woman who discovered her husband’s 8-year long-distance affair when he left his email open on his computer. She read through 8 years of their emails, photos and videos (some explicit) and it took her about 4 hours to get through it all. She was crushed.
3points
#12

My wife's cousin has a GF who was a pen pal with some prison inmate.
One day apparently the prison guy got released. The gf insisted that he stayed with them for a few days because he "had no where to go". The cousin was a push over and didn't say no, even though it was HIS house, his name on the deed, and the gf was just living in it.
The prison guy came, the gf insisted that he slept in THEIR bedroom with her while the cousin slept in the guest room. "Just so he doesn't feel unwelcomed". Then the prison guy never moved out of that room and so the gf just slept in there with him, and the cousin just continued sleeping in the guest room.
Again, this was the cousin's own house. And he was such a push over that he let some random guy move in and basically sleep with his gf.
True yet weirdest story I've ever known personally. The extended family tried to talk sense into him, but he refused to listen. We all did a collective head scratch on this one.
One day apparently the prison guy got released. The gf insisted that he stayed with them for a few days because he "had no where to go". The cousin was a push over and didn't say no, even though it was HIS house, his name on the deed, and the gf was just living in it.
The prison guy came, the gf insisted that he slept in THEIR bedroom with her while the cousin slept in the guest room. "Just so he doesn't feel unwelcomed". Then the prison guy never moved out of that room and so the gf just slept in there with him, and the cousin just continued sleeping in the guest room.
Again, this was the cousin's own house. And he was such a push over that he let some random guy move in and basically sleep with his gf.
True yet weirdest story I've ever known personally. The extended family tried to talk sense into him, but he refused to listen. We all did a collective head scratch on this one.
3points
#13

Dog is unwell, gets taken to vet. Has to have surgery to remove something from stomach. Lacy underwear is removed, and shown to the woman owner of what it ate. Owner realises they are not hers. Husband was cheating, and the dog ate the mistresses undies. Somuch for mans best friend.
3points
#14

That would be one of my old bosses. Married, with three boys under eleven. Owned and ran his own business. For years, every Monday night he would see a lady of negotiable affection. Fool filmed his visits and saved it onto a thumb drive, which he didn't secure. His oldest boys came across it and watched their old man getting down with a dom. He lost everything.
3points
#15

Happened like 20 years ago with the sister of a good friend.
She cheated on him with the same guy he was cheating on her. He is openly gay now. But what are the odds?
She cheated on him with the same guy he was cheating on her. He is openly gay now. But what are the odds?
3points
#16

A quite famous Norwegian podcaster and radio host had a stroke. While lying in the hospital, she received a text from her husband meant for another woman. She then found out he was having an affair, even seeing his sidepiece while she was recovering in hospital.
Somehow they stayed together for many years after, and she talked about it in detail in her podcast. He admitted to everything and owned up to it, but it's still just unfathomable to me. They even had kids at that point, but he chose to hang out with his mistress rather than bringing the kids to see their sick mom. Disgusting.
Somehow they stayed together for many years after, and she talked about it in detail in her podcast. He admitted to everything and owned up to it, but it's still just unfathomable to me. They even had kids at that point, but he chose to hang out with his mistress rather than bringing the kids to see their sick mom. Disgusting.
3points
#17

Got a text from a buddy of mines gf. They had had one of his old classmates passing thru and put her up for the night. His gf goes to bed and he and the classmate stay up getting drunk. His house has motion sensors. Gf wakes up cuz she keeps hearing "motion detected at the back door... Motion detected at the back door..". Over and over again. She goes to investigate and it was my buddy setting it off while he was plowing his old classmate. I felt terrible for her but have to admit I get a chuckle out of it now.
2points
#18

Ugh, my friend's first wife. What a circus. Couple of my favorite incidents:
--we drop my friend off at about 3am from a bachelor party, and got to witness the classic "dude clutching his clothes and jumping out the window" as we drove away.
--wife was at her best friend's house, best friend's pot guy comes by, best friend leaves the wife and pot guy alone for (from what I have been told) literally 3 minutes as she finishes her makeup...she hears THUMP THUMP THUMP and comes in, pot guy has wife bent over the couch and she's screaming "PUT A BABY IN ME". This was the first time wife met pot guy.
She'd also make him breathe into her interlock device in the morning so she could go to work. Real glad that is not a part of my life anymore.
--we drop my friend off at about 3am from a bachelor party, and got to witness the classic "dude clutching his clothes and jumping out the window" as we drove away.
--wife was at her best friend's house, best friend's pot guy comes by, best friend leaves the wife and pot guy alone for (from what I have been told) literally 3 minutes as she finishes her makeup...she hears THUMP THUMP THUMP and comes in, pot guy has wife bent over the couch and she's screaming "PUT A BABY IN ME". This was the first time wife met pot guy.
She'd also make him breathe into her interlock device in the morning so she could go to work. Real glad that is not a part of my life anymore.
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2points
#19

Wife’s college roommate had 3 sisters. We were at the farcical wedding. Unfaithful husband enjoyed the company of wife’s oldest sister while wife was sleeping. The lout also enjoyed the company of his “best friend’s” wife. Was not surprised when wife dumped him.
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2points
#20

I was accidentally the other woman. Met a guy who said he was divorced. He "moved" in to a new apartment shortly after we met. I visited there. He got mail there. Had clothes there. Turns out he rented apartment just to be with me. Was married and living with his wife the entire time. He had met my family, driven to another state to meet out of state family. We spent a lot of time together. I finally got suspicious and drove to his "previous" address and did a stake out after Google told me he still lived there with a wife and child. Saw him drive up to the house and then I broke it off. I feel bad for the wife but I didn't know. No way in hell did I want to date a cheater.
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2points

