I'm sorry to hear how everything worked out in the relationship.

Unfortunately, he was upfront with you and seemed to be right from the beginning when you confided in him that you had fallen in love with him. In some respects, he did you a favour, rather than carry out a pretentious relationship where he didn't reciprocate the feelings.

For your own sake, consider limiting your contact with him for a bit as he's unlikely to change his mind and is probably doing this as a defence mechanism to make you "back off" a bit ...