Okayy, so this guy I like came over the other day and he and

Okayy, so this guy I like came over the other day and he and I were doing stuff. It seemed like he liked me back on homecoming, and the day after (when he comes over) we do stuff. Now he won't talk to me. Did I do something wrong.....? the only conclution i can come up with is that i am a little slore