I'm deciding either I should move on or keep waiting?

My crush and I have been friends for a year. I love him but I'm not sure if he does love me too. There were times I thought he did or he didn't. The thing is, he keeps talking to me about his best friend a.k.a my enemy who terribly loves him too. He always wants her to be with him. I feel worthless and I'm confused because sometimes he treats me nicely and sometimes he treats me horribly. Then I had a crush with someone else but I found out he felt nothing about me. Now I'm attached to my old crush but I'm confused. I want to move on and live my life but a huge part of me says I should stick with the old one and keep putting efforts into the relationship with the new one. What do you think? What should I do? :(