Hi there! Sounds like he was interested in you, but it's weird that now he's not into it. It is possible he met someone else, unfortunately for you. I would literally ask him directly: "Hey I like you and I think you like me too and we should go out, but if you're not interested anymore let me know." He may have also been feeling mixed signals from you as well, so try the direct route. Remember, men are men and sometimes need things to be clear.