Velvett, so what is up with guys like that? I've never understood the concept of cheating. I turned down a number of offers while dating my ex-girlfriend, because 1) I was in love with her and was afraid of loosing her if she found out, and 2) she was so good in bed, that the likelihood of the of the offering girl being as good as what I already had was slim.
Seriously though, if it comes to the point where you can't turn down offers, and especially if you are actively looking for other sex partners while in a relationship, it is time to move on. The person is not the one for you. So if that is the case, what value is there in cheating, and what do people who cheat feel that they are gaining from the experience???