Seriously? Maybe it's just the wanting something you can't have, BUT it is? Or maybe its the amount of confidence a girl has when she is in a relationship that makes her that much more attractive. There was a girl I met, who had a boyfriend. I considered him very lucky and saw her as absolutely gorgeous. Then they broke up, and she was still cute, and now available. But she didn't seem as hot to me. So the question is, Is maybe the unobtainable hotter? than the obtainable? Me personally don't know why, just find women that have boyfriends hotter. Also note, I would never do anything to break up a couple unless the guy is hitting the girl or something extreme like that.