I've found that not only with relationships, but with pretty much anything, we don't really "move on".I'm still pissed about my break up from over a year ago, and every reminder of her upsets me. I've gotten better over time sure, and at least now I'm at the point where I am open to meeting new people. Ultimately I think we as people learn to live with something, or put up with it, rather than simply forgetting it and moving on.