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Someone who is in a committed relationship and breaks the trust of his or her partner by getting physically or emotionally involved with another person. Common forms of cheating include kissing, feeling each other up, vaginal, annal, oral sex and any other contact that involves the lips, hands, and genitals. Emotional cheating invovles forming a close bond with someone of your preferred gender and basically forming a second relationship. This may or may not include physical cheating.
1)Shelly broke up with Rich after she found him making out and feeling up some other girl at a party. He claims he was drunk but she didn't care, she does not tolerate cheating.

2)Mark was always so busy and Amy wasn't getting the attention she wanted from him so she started hanging out with Dave. He was giving her the attention she had wanted from Mark. She may not have realized it but she was emotionally cheating.
by Nathalie D. December 29, 2007
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Damn that was a steezy ass kickflip son!
by niggaliciouszor April 29, 2007
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Forgetting about your girlfriend to go mess around with other girls at homecoming when you are in a commited relationship, knowing quite well she trusts you and loves you with her whole heart then taking that trust and love and take a piss on it. Cheating is anything you wouldn't want your significant other to see, watch, find out about, or do with someone else. Fuck all the cheaters who ever broke someone's heart. If you get cheated on, dump their sorry ass, theres no such thing as a moment of weakness. They dont give a shit about you or your relationship. Even if the girl came on to them, they shouldve said no. They dont love you. They are selfish bastards, and they will do it again no matter what they say. It breaks your heart into a million pieces, you never will trust them or anyone else again, and the pain never goes away. You'll ALWAYS have moments where you think about it and just break down crying, and sometimes you cry yourself to sleep for months.
Travis cheated on his girlfriend Jessie with five girls at his homecoming, that bastard. She deserves better, nobody deserves to be cheated on. Its better to tell the truth than to be caught cheating.
by fUcKtH3cH3eT3rS March 13, 2010
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To date, have sex with, or kiss/make out with someone someone else while you are in a relationship. These people who cheat are disrespectful, selfish, fuckboys/sluts, and pretentious.
If you are married, this is sometimes called adultery
E.g. 1) Mike: Hey Dave, hows it going with your girlfriend?

Dave: Broke up with her, she was cheating. There's 5 months i'll never get back.

E.g. 2)Brittany: Ugh, Sally, my boyfriend was cheating on me. We were together for over a freaking year! How could he?
by a fallen star xxx April 17, 2019
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When one person has a significant other and performs any type of intimate acts with another person.
I caught my boyfriend cheating on me with another girl.
by Erin August 14, 2003
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Being cheated on is one of the worst feeling you can feel. because you loose the trust for the person who cheated on cant even forgive them because your hurt so bad. you never want to get cheated on and the worst part is you dont exspect it,you either get cheated on emotionaly or physicaly by sexual contact. you think you can trust the person with everthing and once you get cheated on everything changes, you cant seem to feel anything, you feel like giving up on life because you loved that person enough were you could go out with the person. you dont know who to trust becuase you dont want it to happen again. you feel like your world crashs to a end you will never act the same. you start slowly finding yourself constanyl thinking about saying what went wrong. you cant seem to stop crying becuase you have no heart anymore. and if you had to chance to change the pass you would and forget this ever happened.
going out with some and your lover does things with other people behind your back which makes it cheating.
by KrAzyk0r3y1 May 02, 2009
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What my slutty ex-girlfriend is gonna do to her new boyfriend when I see her next time.
by prodiGyBNTY July 29, 2003
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