I agree, I'm in a long term relationship and I can honestly say I've felt for other guys during that time..but I would NEVER EVER cheat, I think its disgustingly low. However, if my bf happened to feel the same way about other girls and i found out, i would regard it as cheating. Hooking up with other people is just proving that you have been cheating, but cheating is wanting to be with people other than your partner in my opinion. The mental sense hurts just as much as the actual physcial act of cheating. If you dont love them you shouldnt be with them, a break up is much easier to handle for both parties than cheating. Lets just say if my bf cheated on me, INSTANT DUMPAGE and then sabotage for as long as i know him hehe