What do I say to him?? Suggestions please guys!!!

Ok people I need a few suggestions! Me and my friend used to go out but we split up(his choice) but still remained really good friends. I've always thought he still had feelings for me and even more so just lately because of some of the things he has said and done and also a couple of our friends have picked up on it as well.
Thing is I still have feelings for him and I really want to bring the subject of how we feel and what's going on up. But he is actually quite shy and clams up over that sort of stuff. Also we're really gd friends and I'm scared of ruining that friendship and making things awkward. Sooooo suggestions please people how do I take the next step and talk to him about all this, only I don't know where to start. Please help!