In college I was very attracted to a girl on the xc team. To me, she was perfect. I made the first move, got rejected, and, due to my inability to take the hint of disinterest, immediately fell onto the friend ladder. (The ladder theory, while somewhat immature, is pretty damn close to true.) I stayed there for the rest of our time in college and beyond, even though I still had a thing for her. We dated other people, but at the end of the day my mind always went back to her. Looking back now, it's pretty pathetic. I don't think she even really knew how I felt (cause I'm a huge p*ssy), although she must have known something was up.
You know what snapped me out of it? Her wedding. Since she still views me as a friend, and since we share many mutual friends, I went to her wedding. Worst experience of my life. It truly hit me like a ton of bricks. It made me realize we were on two different wavelengths, and no matter how much I thought we would be perfect for each other, it was never, ever going to happen. I haven't talked to her since the wedding, and I'm not sure if I ever will again. Maybe you think I'm a sh*tty friend, but I realized that I was never really her friend; I just wanted to be with her. If I keep a friendly relationship going, it was just torment me.