Is there somebody who "got away" that you regret losing? Have you ever tried to contact them again?
I dated a guy and we didn't exactly break up -- I moved for a job and he stayed behind. We'd only been together a few weeks, I didn't feel like I could ask him to come with me or anything. We stayed in touch, but he's married now and every now and then I wonder how things would have gone if I'd stayed instead of moving...