Most Helpful Guy
Yes he does and he's a jerk for not giving your things back. I think its more of a "I'm going to punish you for breaking up with me" type thing
Most Helpful Girl
He took you for granted and now just wants you to stroke his ego, the way you did when you put all the effort into it without him having to lift a single finger. Keep ignoring his messages, he'll get tired of trying to get a response from you at some point. If not, feel free to block him.