Most Helpful Guys
Because regret sets in with all things after a month or so, in terms of males. Initially he may have been happy with the breakup and just at ur story since he knows u well. After a month either he would ask you back, stop looking at them because he has moved on or because he regrets breaking up. Since he is still looking at ur story he definitely knows he made a mistake
It's not because he misses you but, more like he wants to see if you're seeing someone yet. I say he probably doesn't miss you because for him to breakup with you on your birthday say that he's a dickhead full of himself. I'll say this though, he sounds like the guy who will see if he can get you back once you're dating someone. I'm glad that you didn't let him know it , that you might have cared a bit, lol.
Most Helpful Girl
He might miss you , from experience boys don't usually miss someone until later on instead of straight away like girls do , other than that I don't know