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Infidelity rarely announces itself with a dramatic confession. It begins much more quietly, with a small, unsettling shift in the rhythm of a relationship. It's a tiny, nagging gut feeling, a change in routine you can't quite put your finger on, or a new phrase they suddenly start using.

An online community asked people who have been cheated on to share the moment the seed of suspicion was planted. The responses are a heartbreaking catalog of red flags that are easy to dismiss in the moment but glaringly obvious in hindsight.

More info: Reddit

Discover more in 30 Ways People Found Out That Their Significant Other Is Unfaithful

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#1

Doctor in white coat with stethoscope writing on clipboard, illustrating ways people found out about unfaithful partners. Our shared doctor encouraged me to get STD testing because “you never know people all the way.” She stood there and said several times that she couldn’t violate confidentiality but she recommended the tests. And my dumb a*s was mad at her for thinking he was that kind of person. It hit me a year later, after I’d caught him with someone else while I was pregnant.

It’s been over a decade and let me tell you, hurt fades, anger fades, but feeling dumb? That sticks.

never214 , freepik Report

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    #2

    A woman in a yellow top refusing to talk to a man in a purple sweater, illustrating signs of unfaithful behavior. They start accusing you of cheating.

    justtypos , Drazen Zigic Report

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    #3

    Close-up of a wristwatch on a person's arm symbolizing ways people found out about a significant other's unfaithful behavior. When he suddenly got “too busy” for everything. couldn’t text, couldn’t call, but somehow always had energy for everyone else. it’s never about being busy, it’s about priorities.

    ScarlettBarbiexDoll , Marvin Meyer Report

    #4

    Young woman with braided hair looking at her phone outdoors, depicting ways people found out their significant other is unfaithful. On her phone 24/7, her face would light up with happiness every time her phone went off, after about 3 days of this I asked if I could use her Facebook Marketplace to put an item up for sale. She refused, she told me to email everything to her and she would do it. We are standing here together and she is saying no I cant use her Facebook and to email it to her and that mixed with the several days prior of the weirdness on the phone I just said it, are you cheating on me. And she said yes. Now are are divorcing.

    RemarkableDonut2676 , Terrillo Walls Report

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    #5

    Person holding smartphone and typing a message, illustrating ways people found out their significant other is unfaithful. My then-boyfriend and i were watching a movie and laughing and as he stood up to go to the bathroom, i held up his phone for the face id unlock and told him i was going to look up the cast cause i thought i recognized one of the actors. even though we’d been relaxed and goofing a split second prior, he immediately got incredibly antsy and was leering over my shoulder the whole time reaching over and fidgeting like i was a loose cat walking on the nuclear launch keypad. i’ve never felt the urge or need to look through any of my partners’ phones, even after this incident, and he’d never hesitated to do the hold up for face id thing to me before, so i found it extremely weird. sure enough come to find out a few months later he had accounts on multiple dating apps and had been cheating on me.

    kennapringles , freestocks Report

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    #6

    Man looking shocked at phone screen, reacting to signs of unfaithful behavior from his significant other at home. Texting at a weird angle … (body language).

    OkViolinist5554 , jet-po Report

    #7

    Four women laughing and holding drinks outdoors by a colorful mural, representing ways people found out unfaithful partners. When their patterns began to change. Didn’t like drinking, now going out to happy hours after work. Suddenly very motivated to workout. Putting extra effort into their looks. Suddenly planning hangouts with “new friends”.

    lite67 , Elevate Report

    #8

    Person sitting on an orange couch showing frustration, illustrating emotional reaction to discovering significant other is unfaithful. Everything I said seemed to annoy her for some reason. I felt like she just didn't like hearing the sound of my voice but it was really just she was moving on because she knew something I didn't.

    fr0z3nf1r3 , SkelDry Report

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    #9

    Young woman looking at her reflection in a mirror, contemplating signs of unfaithful behavior in a relationship. She went from treating me like her obsession to obsessively talking about the other guy. And she would anxiously wait for texts from him and get upset when he didn't text back quickly, like you expect a significant other to do. She also started looking at me like a roommate and finding every chance to make "business" meetings to go see him. They are now married. She even wore a nice dress to go see him once and asked me if she looked pretty.

    It was easy to see her eyes fully go off of me and onto him.

    One_Studio5711 , Vitaly Gariev Report

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    #10

    Person wearing bracelets reaching for a book on a shelf illustrating signs of unfaithful significant other. She had joined a book club, but I’d never seen her read.

    I didn’t notice it as a sign when it first happened, I only realized after the fact.

    RealBowsHaveRecurves , Christin Hume Report

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    #11

    Man smiling while looking at his phone in a bedroom, illustrating ways people found out their significant other is unfaithful. Being very protective of their phone.

    Lux_Owl , Ambreen Report

    #12

    Young woman sitting on bed looking upset while her significant other sleeps, illustrating signs of unfaithful behavior. He started being very vague about people's gender when talking about who he was spending time with. "My friend and I went....They did this .... We went here ...They bought that..." And when I pointed it out he would gaslight me and try to tell me he wasn't being vague, that I was making a big deal and being controlling. It was because he was hanging out with women and being very careful not to say that. 


    This, and retroactively another sign that should have been obvious was that he would get upset with me and stop talking to me for days at a time. Found out later he was using this time to cheat, he would arrange a fight so he would have an excuse to not talk to me for a while so he could talk to her. And he did the same to her so he could talk to me. .

    Cutmeinhalfpleasesir , Vitaly Gariev Report

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    #13

    Hand reaching for alarm clock on nightstand next to a glowing lamp, symbolizing signs of unfaithful behavior. When “goodnight” started coming earlier… but their “last seen” stayed online for hours.

    dianadelapaz , Mykyta Kravčenko Report

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    #14

    Baby lying on a cushion holding an adult’s finger, illustrating trust and signs in relationships for unfaithful partners. He introduced me to his 6 month old infant.

    Turbulent_Paint_7733 , Alex Bodini Report

    #15

    Woman in a dark room looking at a phone screen, illustrating ways people found out their significant other is unfaithful. Texting in the middle of the night.

    agentkramr , Inspa Makers Report

    #16

    Couple sitting closely on a couch, sharing an intimate moment, representing signs of unfaithful significant other. Walked in on him with my cousin.

    Holiday-Menu-171 , volant Report

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    #17

    Couple in bed facing away from each other, showing signs of distress related to unfaithful significant other. Small stories didn’t line up anymore, she started talking about things she thought we did together (it was the guy she was cheating on me with), accusing me of cheating, and becoming more possessive.

    STiMPUTELLO , Getty Images Report

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    #18

    Person in a brown jacket holding a smartphone, symbolizing ways people found out their significant other is unfaithful. The 3rd person instant messages you saying “I’m so and so’s wife/ girlfriend and caught my husband / boyfriend snap chatting and texting your wife. Finally I asked for proof, got it and then caught her in a huge lie. Lawyer was worth the money.

    HugeCalligrapher1283 , A. C. Report

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    #19

    Wedding invitation cards and decor arranged on a gray fabric background illustrating signs of unfaithful partners. He got mad when we had plans to do things. That didn't fit into his and his new lovers schedule. IE: we had a wedding that was RSVPd to months in advance and when I brought it up the week before he got very upset.

    longlostlotrelf , Micah & Sammie Chaffin Report

    #20

    Man in white shirt talking on phone outdoors during sunset, illustrating ways people found out unfaithful partners. I called my friend to see if him and his twin wanted to hang out and he said "im down but Drew can't come because he's making out with Sabrina" (my gf at the time)

    Thats when I started getting suspicious.

    Jabathewhut , Hassan OUAJBIR Report

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    #21

    Neon bar sign glowing in a dark alley where people often found out their significant other is unfaithful. Became distant, said s****y things to me, lost weight, bought new clothes and started going out with her best friend (who was single) to bars. I confronted her and she admitted it.

    sciaticannot , Nastia Petruk Report

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    #22

    Young man holding a cup and looking out the window, reflecting on trust and signs of unfaithful significant other. Your intuition will tell you everything you need to know.

    SlyQueen02 , Milles Studio Report

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    #23

    Woman leaning against a wall looking down, reflecting on the signs of a significant other being unfaithful. Can someone please give me insight into this. I am really struggling..

    I didn’t know he cheated or left me for another girl. He just stopped talking to me.. it was weird. We broke up without ever actually talking about it. It just ended.

    Two months later, he reached out saying he couldn’t stop thinking about me and that he loved me. We got back together, and four months later I found i went through his phone and found out he had been with another girl during those two months, basically a full-blown relationship. I even saw their last messages. She wrote, “Ew, how was your slimy sleepover?” when he was literally at my place and he has an "apology call" ending it with her.

    After I found out, I told him he was disgusting and kicked him out. For months afterward, he sent handwritten letters to my house, flowers, even got my name tattooed on his ribs. It just doesn’t make sense. He became obsessive, saying he loved me, wanted to marry me, would wait forever. Then I kept finding out even more lies. Eventually, I blocked him on everything and told him to stop messaging me or sending letters.

    Yeah… I feel f****d up.

    saggitormented , Eric Ward Report

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    #24

    Man sitting on a couch, looking at his phone, representing ways people found out their significant other is unfaithful. Caught my ex husband on Grindr looking for "bro jobs".

    AlmightyWitchRitual , Vitaly Gariev Report

    #25

    A couple sitting apart on a couch looking distant and upset, illustrating signs of unfaithful behavior. Emotional distance.

    afahrholz , Vitaly Gariev Report

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    #26

    Person holding smartphone near laptop by window, illustrating signs people found out about unfaithful partners. Randomly following private women's profiles.

    kyrigama , Getty Images Report

    #27

    Torn paper heart hanging on string against black background symbolizing signs of unfaithful relationships. Gaslighting and holding onto grudges on things that didn’t matter in the long run while some other dude treats her 20x worse. Losing all her morals and character. preaching values she never adhered to herself which were actually your own which she then gaslights

    But yea definitely gaslighting and making weird comments.

    Zestyclose_Olive435 , Kelly Sikkema Report

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