OK, I'm going to sound like a sap or something similar here, but I haven't cheated on a partner. I guess the closest I came to actually going behind someones back, was when I was 19 or something and having a snog with some girl at the dancing, proceeding to finish the relationship with my partner that same weekend anyway (it was already over as we both knew before that point.)
So I dunno, in a relationship I haven't had problems were the girl doesn't want to have sex, we seem to be able to balance it out with each other. Maybe if I was in a relationship where I wasn't getting any at all then I would go with someone else, but then I think I'd need to like the other person physically and emotionally, so in that situation I'd be considering (and probably would) leave my other half anyway.
I suppose it becomes more difficult when there are children involved, but then, i'd like to think if I got to the stage of having a family with someone, that we'd be able to work that sort of shit out.
Although, I see people going behind their partners backs so often, and then when you ask people if they would, just about all of them say "definately not." So statistically at least some of them are lying. I've sometimes wondered if i'm the only person who even puts a value in being faithful. I dunno, it might even be something to do with me wanting to establish and maintain the good feeling I get out of my Fi hidden agenda being fufilled, with some sort of loyalty-connection thing.
Maybe I should experiment more with this two timing thing, maybe I am missing out on a lot of fun..
@Jessica, ugh, am I starting to talk about my life now?