To me, relationships are fascinating because in most cases (unless they start off as friends first or something) you're bringing two complete strangers together and seeing if they make things work as a romantic couple. I think relationships fail because of lack of acceptance. In my opinion, most people don't want to accept people who are different than them - and they're missing out because of it. I was once dumped by a man after I told him I was a Democrat - shows you how accepting he was! Of course, I'd rather be a Democrat than his girlfriend, lol.