Why is he changing his mind?

So I was best friends with this guy for over like 8 months then we became boyfriend and girlfriend, then we broke up, he never really told me why, he told me he still liked me. so we sorta became really close again, and he said he loved me, then the next week he's like, I don't have feelings for you, but a day later he sends me a picture that says always and forever (I'll attach it) and I really love him, and I don't know what to do, why is he messing with me? does he still like me or no? I'm so confused and sad.

Oh geez mixed messages and signals just tell him to leave you alone, he sounds way to immature to know what he wants so tell him you want to be just friends until he grows up a bit.