<human>: Can you condense the text into three sentences or less?

Oops! The title should say "old" not 'only".

And my apologies if there is a more appropriate subreddit for this.

About a year ago I [25 f] had a short but very intense involvement with someone [26 M] that was off and on for about four mounts. We were falling really hard for each other, but there were some complicated circumstances that lead me to break it off. We kept in contact occasionally via email to essentially communicate that we were still thinking about each other. These emails usually escalated into fairly involved message exchanges. After a few rounds of this I felt it was not the right thing for us, and closed the door between us through an email. He never wrote back.

A few months later I learned that he'd moved quite a ways away (which is partly why I broke things off in the first place).

A few months after that he sent me an email to thank me for showing him some music that has had a huge impact on him. This hurt tremendously because it seems so inane. He signed off the email casually saying to let me know if I'm ever in his city.

I wrote back and told him it was good to hear from him and asked him how he was, and he never responded.

I wonder if anyone has some insights as to what was going on here? Since he did not respond after breaking it of for good did he just want to communicate that there were no hard feelings? Did he miss me and just want to say something, but figured it would be stupid to go down out old path again?
<bot>: Old romantic attachment contacted me and then didn't respond. What's up?  Why would *you contact an old romantic attachment?