It sounds like both of you are playing games... equally sending each other loads of indirect signals that are so confusing!!
I agree with Sannah - be direct! Why not just say outright to him (but conversationally, not agressively) something like "I really value your friendship but lately I've noticed that things have been a little strained between us. I'd like for us to be able to be open with each other and talk about it so we can move forward with our friendship."

You could tell him some of the things you have noticed and let him know how those behaviours made you feel. Don't forget to also be open to hearing about the impact of some of the non-verbal messages you have been sending him.

But, you know, TALK about it.
Seriously.