Do you think that he will contact me again? How should I act to win him back?

It sounds to me as though you need to forget about him. It seems as though if you do give him another chance he's just going to keep doing this to you over & over because your letting him. You may really like/love this guy but he's gonna end up hurting you real bad. So yes he WILL contact you again but you need to reject him this time. Its your life and you dont hace to take my advice, but im saying this from experiance. Hope it goes well & remember your worth more than a man who cant decide if he wants you or not. Keep smiling.