What should I do?

My boyfriend Alex, he is going to a different school and he and I haven't seen each other for 4 months because I have been out of state and sick then the first week of school etc etc. We texted everyday and he simply stopped texting me for three days straight. I felt bad and I wanted to ask him to homecoming and surprise him at his school football game. He didn't know but he randomly came back and said I can't do this anymore, I don't know what this was if I'd call it a relationship or not? And then said some real assholise shit. I still love him and I am not sure what do to do? He is acting extremely extremely out of character like a completely different persons who has lost all morals. I am a freshman and 14. I had been dating him for almost a year.