Why is he acting this way?

I broke up with my boyfriend of 3 years on last wednesday. Well, I have 2 c him at church every sunday and I hate that!!!! I don't want 2 c him, be around, talk 2 him...at all!!! He sat right infront of me at church and he was looking all happy and talking 2 people that he doesn't normally talk to. I never spoke a word 2 him and he never said a word 2 me either. I had a meeting 2 go 2 and he stood around until after my meeting and once he knew that I was about 2 walk out of the room, he started laughing and talking to someone. Once I walked past him without saying anything, he finally left. Why was he acting like that? Does he miss me and regret losing me?

he still likes you
he's doing this to try to get over you and try to make you think that he's doing great without you, which he really isn't!

guys are weird sometimes i think he is trying to make you jealous or something. just don't worry and pretend you don't care and he will leave you alone.

Baby there is an Indian saying a dog barks at the moon, there is no damage to the moon. So be like the moon and ignore the dog and after sometime the dog will get the message and move on.
He wants you to retaliate so if you avoid and continue to ignore you are back on track with your life.