<human>: Can you succinctly summarize the text in 1-3 sentences?

I [22f] could tell the whole story about how he [22m] was my first love and we tried to make things work, but I was always trying too hard, he wasn't mature enough, blah. But we broke up and that part's not the issue.

When I told him I was leaving he was mad. He tried to blame it on me. I told him I would come back in a few days to get my things. I did, and he had written a beautiful and sincere apology for me. It wasn't a ploy to get me back, as he had tried that many times before and I always fell for it. We talked for a whIle and it was bittersweet. 

I don't know how to feel. I almost wish he was still mad at me and still too stupid to see why I left. That would make it easier, because then I could say to myself "Fuck him! I'm better off!" But we left on good terms. I don't want him back, but I keep getting these tiny little thoughts in the back of my head saying "hey, maybe we can try again later, since the issue was his maturity" I don't think it's really that valid of a thought, but also still valid enough that it might work. We cut contact for now.

BUT I don't want to think that. I don't want to "save" myself and then it turns out he moved on, or that I really am better off with someone else. So, how do I stop thinking about him, even though I dumped HIM?
<bot>: left my first love on good terms, I keep thinking of trying again in the future but I want to ditch those thoughts. How do I move on?