I think the truth is, you should be thinkabout the other girl/boy (not the partner) and also about yourself too.Even though your partner may not find out.What if the other girl/boy that you make out with behind ur partner's back, truly loves you?And moreover, why would you cheat in the first place? If you honestly believe that you love the other girl/boy then break up with your partner, end of story.And honestly, loving one person is such a beautiful feeling.You would never want to hurt the one, and when you love someone. you make a promise to yourself.By cheating, you are breaking that promise.and although it seems as guilt does not exist, it is there, deep inside, sometimes you're just too numb.But it's there