He is most definitely a confused boy. He is trying to suck you back into the dance of distancer pursuer. Don't do it. You have to be the one to stop this little dance. He really cannot understand why you are not pursuing him. He's very confused and boy, that ego of his took a little beating over the comment about not pursuing...that's okay.
As for him being on dating sites, I'd leave him be....who knows, maybe he's hoping that you'll see it and start the chase all over again. They are known for the dance.
Don't even try to analyze what he's doing...he's just emotionally challenged right now. A year from now, you just might chuckle over some of the things he has said or done. Right now, it's confusing and hurtful to you....detach!
Give him the entire cake and do not share one slice w/him.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.