Just because Ты break up with someone doesn't mean Ты stop liking them. I still care about many of my exes, even if we did break up. I mean, there was a reason Ты dated, an attraction between Ты two. Those attractions don't always just die.
And plus, if Ты broke up with him, then it's possible he still really likes Ты and wouldn't have wanted the relationship to end at all.