Go for it, you only live once.

You are right with your (or your friends') thoughts. Everybody cheats.

Over 2 years I've seen quite a lot of posts from PUAs telling that there is no need to cheat if you are in a fulfilling relationship (if such thing really exists). If I remember correctly, this only goes for women. I have to admit that I don't believe in it.

All our human sexual traits are made for NOT being monogame:
The Penis top: It looks like a mushroom, but the function of the shape is to scratch out sperm of other men out of the female's vagina.
The testicles: We ejaculate hundreds of millions of sperm even though onlyone is needed to make a woman pregnant. Also we reproduce... sorry I can't remember the number, but about 5 million sperm per hour.
The sperm itself: Most of the sperm (more than 60% IIRC) is not able to fertilize an egg. This majority of sperm are there to fight against other mens' sperm, they even have spikes on their heads, may have up to 4 heads, etc just for fighting and when being old, blocking the way for new incoming sperm inside a female's cervix.

You can see, the human's body IS prepared for infidelity to happen. The trick with infidelity in most animals (including humans) is to not let your partner know about it happening. If you want to know a lot more about it, read Sperm Wars by Robin Baker. You will read about observations of female birds flying behind bushes to get f***ed by other male birds as soon as their male partners fly out of the nest for getting food and other eye-opening examples.

tl;dr:
If you are sure for more than 99% that your wife/gf will never know about your infidelity and you want to risk receiving STDs, do it. If your girl is "normal", she will do the same in such cases (like when she is abroad without you).
It's all about enhancing your reproductive success. That's why your brain fantasizes about other women.

Before anything,the name of this topic is a dumb rationalization.
Yes,I do believe in fairy tales.

I wish i never read sperm wars. Although i am sure much of the science is accurate it paints a pretty dismal picture for sure. Paranoid that your girl is cheating and is going to get impregnated by some "lover" with good genes and you are going to get stuck raising the child is a pretty negative headspace to be.

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~Carmo~

Yes, this works. Though "cheating" is a stupid way of doing it.

This is why I prefer open relationships-- it prevents this kind of boredom from setting in. I would recommend talking this sort of thing over with your gf before you actually go for someone else.

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Don't hate, just dominate.

Even though, I really dislike the thought of "everybody cheats" ... I have never done it in my past relationships, and to even think about doing it now, it gives me the chills. I don't know why, I guess, as much as I would want to fuck another girl at least just one time, I don't think I could still look at my girlfriend's eyes and tell her I love her. Its true that maybe all science points that humans can't be monogamous, I read a study that about 58% of males had cheated at least once and about 45% of females had also cheated. For men, its mostly the lack of sexual satisfaction and for women its the lack of emotional satisfaction, maybe a more active sex life can solve problems for men. My mom, on the subject says "Look as long as he treats me fine, I'm ok with whatever he's doing" (Speaking of my father, they're now divorced, but she says she knew that he was not faithful).
Sometimes I think they're just phases, I had not seen my GF for a week (we go to same school) and I guess I kinda got a little edgy on not having sex for a week, that I started seeing every girl as a potential partner, now that we saw each other and had sex, you could say I'm sattisfied now, and I don't find myself looking at other girls. As with any relationship, I guess we all have phases that we go through, the beginning phase where you're just getting to know each other, the phase where you start to fight about everything, then the phase where everything is back to normal and even better.
Its true, you only live once, and while humans may not be made to be monogamous, I try my best. I resist temptation, and trust me does it come in silver plate sometimes.
Maybe it also has to do with pornography, you know how the guy picks up a "random stranger" and within 10 minutes they're fucking in the backseat of the car, I guess this takes off that reality sense of you, and you actually get to imagine doing that (I have!) ... that's why I stopped it.
Well, a lot of blah blah here huh ? ... Well, I can say I've come to the conclusion that fairytales might indeed be possible, but as human beings we're weak to temptation. I just don't want to be in the male percentage of guys that have cheated in their relationship, I'd rather be in the proud minority. And if, by any case should she do something like that, I do hope she tells me, because if I find out, well, I don't know how I'd react, but I'd surely feel like she had been seeing me like a stupid all the time.
Cheers! Share your thoughts

I cheated literally last friday. It was sort of sub-wordedly planned with the girl.

Honestly? Been with the GF for 2 years and although I firmyl believe cheating is wrong (and would rather just have a threesome)... it CAN help, but it depends on your outlook.

I think i had it lucky....

I'm only with my second girlfriend and I've only slept with those two people. My current gf has slept with nearly 20 guys. She is good looking, fun to be around and very in love with me. Problem is, after six months I've really started to look at other girls and think about how much I want to have sex with them. I couldn't justify it to myself as my last gf cheated on me and when I found out (after we'd broken up) it destroyed me, but I'm really starting to doubt that I'd be able to resist temptation if the opportunity came up. Any words of advice?

EXACTLY!

Why worry about cheating or getting jealous ever!

Open relationships are great! The girls always make an effort when they see you, they're trying to win you over to want to be with just them, and they're more attracted to you knowing you have other women in your life (just don't let them know specifics - they should have the general idea that you're polyamorous, not the other girls' names and when you're seeing them, and you should try and avoid them meeting each other!)

From your perspective, you just have to be cool with them seeing other people if they want to. You can't be jealous if they're not allowed to be either.

It works. The secret is to be totally up front about the fact that you are not looking for a monogamous commitment. If they can't accept that, move on to the next one.

TRY IT!

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Sounds to me like your trying to validate your actions ( cheating) in your own head. Telling yourself whatever need be to make it ok.

Well its not ok. Cheating is hurtful and awful. As the poster above me said: "Why not just enter an open relationship?"

I have been cheated twice by my girlfriend.We have a verry nice relationship we have an amazing sex life and also emotionally we are bounded to eachother anyway at first I forgive because she seemed devastating to me and keep saying 'I wont doi it again I am so sorry' but from her earlier relationships she always cheated her boyfriends lots of times and when we were talking at the begining of our relationship she said to me that I never cheat you because I know the horrible consequences and I love you so I believe that lie her but after two weeks ago she cheated again me with another boy so this time I deleted her from my life
NOW she calls me everyday says sorry I am so bad right now I cry everyday every moment please accept me bac but I dont want anymore my heart was broken already.She seems like she love her roomate but actually she doesnt she actually made her broke up with her boyfriend secretly but her roommate doesnt know that she use her every time and her roommate assume that they are close friend but its a lie.
I really find her roommate attractive how can I pick up her roommate and make a clear finish about this girls curelty please help me
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bra_dy