You made the right play by putting him all-in after such a meager raise. If he had a set, he'd have either flat called or raised the pot- his raise indicated just what he said afterwards, that he thought you had AK. You tried to reassure him that you did not, and he called his whole stack. I would have put him on one pair, and made the same move. I think that he made a huge mistake going all-in in this spot, and if you continue to get in this situation with him you will make money. If you only call, he will most probably know right where you are at. By calling a weak raise, you probably confirm his suspicions and cost yourself money if you do make a hand. I think you did right.