For some reason lately I've been missing my high school ex boyfriend. I know I dumped him because I wasn't happy in the relationship. But now I'm starting to forget all the bad times, and I only remember the good ones. It's sort of skewing my memories of him which isn't good because I definitely can't get back in a relationship with him. I know that if I get back together with him, in a couple days I'll be super unhappy again. I just can't stop thinking about all the good times. Is this normal? And what can I do to stop thinking about him?