Thank you very much for your advice. Actually I am very close to giving up. I will just wait his reaction to this card and it will be either commitment or else : adieu.
He actually never said that he didn't want to commit, but I agree that it is some kind of game. I do believe he likes me. It is pretty obvious to everybody. But sure, it may not be enough and I am not willing to be waiting in the rain.
The only reason I haven't given up already is that there was progress : from running away, to coming carefully closer, to sharing his life stories with me, but he stills seems very afraid. Actually, he is trying at the same time to keep me around as you say, and to get rid of me by being nasty, saying he is nasty, looking indifferent, walking away without explanation. It can't go on. I am tired. Really tired. Maybe my independance will open his eyes, if not I will know I have not lost much.