<human>: I'm 20 (f). Last year, I ended things with my boyfriend because I wasn't happy with how it was going. He was very forgetful (would should up to see me late, forget we were doing something, etc), the relationship was going nowhere, and he had little ambition to better his life (wanted to be a pizza delivery man for the rest of his life, not that it's the worst thing, but hardly seemed like a goal). After realizing there was little or no future to the relationship, I slowly slipped out of it, and at the same time realized I had feelings for my best friend.

I broke things off with my boyfriend (of a few years on and off), not to pursue a new relationship, but because I couldn't endure any more of the relationship. I promised him years ago that we'd always be friends, and I know that it's hard to be friends after a breakup, but he tried his hardest. He tried to win me back for months, then he decided we could just be friends, and finally I just told him we had to cut off all communication.

At this point, I still see him around sometimes, and I don't want things to be awkward for either of us. I cut off communication so that he would (hopefully) be able to move on from the relationship. The last time I saw him (he was out to eat with a group of our friends who he never really sees), he immediately stopped talking when I walked into the room and sat on his phone all night.

I don't feel guilty about ending the relationship, or being happy in my new one, but sometimes I think I should talk to him and mend things so that things aren't as awkward. I never wanted things to add on a bad note, as we had been friends for years. Maybe it's better to just let this one go, but I'm really not sure. Any thoughts?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Left things off in a bad way with ex, never wanted to be enemies, in a new relationship. Should I try to tell him that I don't want things to be that way?