Need to rant

My ex narcissist boyfriend and I had a rough break up a couple years ago.. He’s now married but the other night he messaged me on Instagram at 4 in the morning saying “hey” . I don’t understand after all he put me thru AND he’s married what the hell can he possibly want?? . I also believe he probably could of been intoxicated cause that’s his style . Why can’t he just leave me alone ?? I moved on in a healthy wonderful relationship , with a guy that treats me the way I deserve to be treated and he still Manages to get in contact with me