If my girlfriend where to just kiss another guy on the lips I would break up with her.
I have little experience in this field but I don't think that makes my opinion invalid.
Depends on who the guy is, really, and the persona of my partner in the first place -- in order to properly interpret what the kiss was. Physical intimacy is usually not done between common friends, and usually is between two partners and very close friends in a time of comfort (when on a serious level)... I think it's underdone, as a result, and if my partner thinks the same and both her and the guy she would kiss are "on the same level" (Him knowing that I'm the boyfriend and respecting myself and my 'position') (Her knowing that I'm her boyfriend and would frown upon (to say the least) anything else otherwise), I think I would be fine with it, I would find it quite heartwarming to see the same honestly. It shows a large sense of security for myself, it allows my girlfriend and the other person to have better expression themselves without worrying that much about me (confidence in my personality themselves), and etc.
This wouldn't be a likely situation, being how kissing is culturally perceived it should be taken into account that something could easily be going on and as a result I'd be much more skeptical but... well hey, I was thinking about an ideal situation. :)
Although I regret to say this I am not very certain that in situations whether I would cheat on my girlfriend or not...
I tend to think of situations on a positive note, especially if it would be between two different people in a relationship like this. I'd prefer be broken-up with straight up, it's more honest, and it doesn't allow any surprises... even if it's for another guy. Do I hate the guy? Depends, do I actually dislike his character or what he's done previously, or am I just taking a biased standpoint against him because my ex-girlfriend is with him? I would think that I would be with someone intelligent enough to make her own choices and we could at least end on a positive note in that stance... if not, then I would view it as for the best... wouldn't you?
However If I were to be given the opportunity to sleep with someone that I find VERY attractive I am not sure if I have that kind of self control to deny the opportunity.
Before this quote you stated it a possibility of human nature. For your sake, don't try and protect your inability to control yourself (yes, that's supposed to sound blunt) with a generalized judgement on humanity. Learn to develop your actions based on what you think is the most logical / reasonable, where that fuels your discipline. It is much easier if you're able to tell yourself to shut up and do what you know is right, especially.
Make the right call, and break up with her beforehand at least, because if you're with someone then it should be obvious that they at least do not deserve to be violated in terms of the trust you share together.
<-- I say this in all honesty.
I hope you rethink your first statement - 'I think weakness in itself is in human nature.' then. Sorry to go on about it, but hey -- it's for self-improvement, I would think. It's great that you honestly think this, and furthermore that you put this out there (admittedly to anonymous people who you've likely never met), but this is my honest feedback, I hope you give it a bit of thought. :) Thanks, if you do.
Men are supposed to be naturally attracted to multiple partners at once and a recent study suggested that when men stray, they do so whilst still loving their partner, its just they want more sex.
What is natural and what is allowed need not be one in the same. Don't get me wrong -- I believe some things that are natural should not be changed (such as homosexuality, if you look at that thread), but the more, I guess you could call "civilized" aspects of humanity I believe can be retained even if it tugs at your "primal desires". Also, it could be possible that guilt caused from actually cheating during the sex (especially when thinking back on it) could inspire a form of love for your initial partner.
Society expects monogamy, but different people expect different things from individual relationships.
It would be on the safe side -- and a fair one, honestly, to be explicit on that in the relationship.
Monogamous does not really require anything to say about it -- since you're not really doing anything, but having sex with someone else is mathematically an additional action, so it calls for notifying your initial partner.
- H