“My 3-year-old told me.”

The thread quickly filled with hundreds of devastating, jaw-dropping stories of betrayal.

Here’s what people shared:

1.

A person's hand is inserting a memory card into a digital camera

“I had gone through my daughter’s closet and had a bag for Goodwill.

He never does it.

So, I opened the trunk of his car, and there was his gym bag.

A person's hands holding an ultrasound image of a developing fetus

But he hadn’t been to the gym in over a year.

I opened the gym bag, and it was filled with our marital sex toys and some basic toiletries.

He was cheating on me, USING OUR SEX TOYS with another woman.

Condoms in various colored packages are arranged in a circular pattern

I got into his phone, found more, and confronted him.

u/MsFlibbertigibbet

2.

“He’s a photographer, and it’s not unusual for him to travel for photoshoots.

A single metal mailbox on a wooden post with its red flag up against a clear blue sky

I found photos and videos of him having sex with other women that he was photographing.

I trusted him so completely that he got too lazy to hide it anymore.

I never would have touched his camera before our daughter was born.

Close-up of a person's hand on a car steering wheel, focusing on the car's speedometer and dashboard

I just wanted to print the photos.”

u/darkly_shaded

3.

“I caught my fiance and my flatmate in my bed together two weeks before the wedding.

People socializing at a bar with several glasses of drinks on the table

u/rowenaravenclaw0

4.

“She broke things off when she got pregnant because she was sure it was someone else’s baby.

Turns out I was one of three possible dads.

A hand with bracelets and ring is holding a teal notebook on a wooden surface

u/Active-Stress2392

5.

She complimented a picture I had just taken of him.

He had sent it to her while sitting right next to me.

Person on their knees, reaching for a set of keys near a green handbag on a wooden floor. The context implies urgency or a desperate situation

This all went down at the Eiffel Tower just a few hours into our supposed two-week vacation.”

u/AmyLacex

6.

I checked each condom, too, to check the serial numbers on them.

A person holding and using a smartphone, focusing on their hands and device

And I counted them.

There were seven left in a box of what was 10.

When I came back, there were still seven condoms in the box.

A "For Sale" sign with a "Sold" banner is in front of a house, indicating the property has been sold

I checked the serial number of the box and condoms.

He’d literally replaced the EXACT same number of condoms, thinking I would never know.”

u/nepsola

7.

Person in a black shirt uses a smartphone at a table, with a folded cloth napkin beside them

“I found a CD of love songs in her car.

I skipped through the tracks, and it was obviously a mix tape of love songs.

u/MrBenzedrine

8.

Person looking at their phone screen in a dark setting, face somewhat obscured by the light from the phone

“I dreamed of it the night it was happening.

I was away visiting my parents.

I never knew who did that, but it merely confirmed what I already knew.”

Two people partially hidden behind a door share an intimate moment. The door has a "Do Not Disturb" sign

u/bluetoedweasel

9.

I went home and didn’t say why, then ended it a few days later over text.

u/nuntend0

10.

A person is seated at a desk looking at a laptop screen displaying a chat conversation. A plant and desk lamp are beside the laptop

So, I wrote down her mileage before she left.

When she returned, she had only driven 80 miles.”

u/salmiakki1

11.

“My 3-year-old told me.”

u/FourTheyNo

12.

“She was a bartender at a popular spot downtown.

About 10 minutes later, my phone was blowing up with her messages.

I didn’t reply to any of these messages.

I let her ramble until she finally said, ‘So, we can’t get past this?’

I replied, ‘No, I don’t think so.'”

u/apocalypticradish

13.

He had recently moved to my town for work.

He was also visiting his family at the time of the call.

Little did I know that he was visiting his mom, as well as his wife and kids.”

u/wyntr86

14.

My name was two up from the bottom, and we’d been dating for over a year.

One of the names below mine was her male friend with whom she swore nothing had ever happened."

u/atticusfinch1973

15.

“She told me right after she came back.

Her cheating wasn’t the worst part, though.

Everyone knew what was going on.

Thanks, I guess.”

u/Poschta

16.

I picked it up and asked what it was; she acted like she didn’t know.

It only had one number in it, and it was his."

u/MentalEntropy

17.

She said hi and asked what I thought about my girlfriend going home once a month.

I told her that it didn’t bother me.

u/dring157

18.

“I noticed on the phone bill that she was texting a certain number 600 times a month.

It seemed familiar, and when I looked it up, it was one of my friends.”

u/Civil-Research-1789

19.

“I found out my ex was cheating on me when she was at home visiting her parents.

Obviously, it was all my fault for checking my emails.

I am happily married now and glad to have gotten out of that horrible relationship.”

u/Bigboss910

20.

“The other woman called my office on the day that we closed on our house.

u/STLCityAmy

21.

I’m very trusting, but my gut screamed at me that something was wrong.

It was enough for me to file for divorce.”

u/themorganator4

22.

“I hated HOW I found out, but I’m glad I found out.

I went through her phone because she always wanted to go through mine.

I see now it was a ‘guilty conscience’ thing.

u/chavooooo

23.

“I arrived at her place for a date just as two other guys arrived.

u/firemage555

24.

I worked at night on Fridays, so I didn’t drive back with her.

I locked my keys in my car at about 2:00 a.m., trying to leave work.

We had been married for nine months at that point.

She married that dude six days after our divorce was final.”

u/nam2212

25. u/Emotional-Prompt-444

26.

“My fiance was driving us home from a party and using her phone to navigate.

I was completely devastated, but I screenshotted everything in case she decided to deny it later.”

We’d been together 16 years, and I never saw it coming.”

u/Redcrosse

27.

“He used my phone to cheat and then tried to ghost her.

He told her he had surgery and then planned never to speak to her again.

She called and asked for me because my name appeared on her caller ID when he called her.

It went kind of like this: ‘Hi, can I speak to [my name]?’

‘This is she.’

‘Oh, I’m just looking for [my husband’s name].

I am worried about him.’

‘Well, I’m his wife.

Maybe you’re free to tell me why you want to talk to him.’

‘His wife???'”

u/IndifferentGuavas

28.

Then, I dumped her straight away."

u/Alien2522

29.And: “I caught my ex attempting to cheat but getting rejected.

We were on a weekend trip trying to fix our relationship.

We had some drinks, and then he went to sleep before me.

His phone was blowing up, and I went to silence it since it kept me awake.

I saw he’d been messaging this girl all night and confessed his love for her.

She told him she wasn’t interested, lol.”

u/TrashPandaAntics

Note: Submissions have been edited for length and/or clarity.