Did I end it too soon?

This guy and I have been steady talking for about 4 months, in the beginning it was amazing, long cute texts, compliments, always talking, hanging out, doing couple things like hiking, going out to get ice cream, movies, just things like that. I don't know when exactly it happened but just out of nowhere really things got different, we hardly talked and if we did it was only a few words, we never do anything anymore, and when I would ask what he wanted out of the relationship he would get defensive and say that our relationship was complicated and that I am "obsessed" with labels (i.e. bf/gf), if we argued he made me feel inferior to him as if I was dumb and what I had to say wasn't important. What topped it off was we planned to go to the movies and he just didn't talk to me that day at all until after the last showing of the movie we planned to see. We planned to go out bc he was leaving for college the next morning. But he didn't even try to hang out or invite me over. So I basically ended it and he said "okay sorry" but since then he talks to me like nothing has changed, and it's kind of making me miss him. Should I just keep to my decision and move on or try to work things out? Sorry about writing a book btw😂