Am I being immature?

So my boyfriend was supposed to come over today. He had pushed me off all weekend until today, Sunday. I was so excited. Until....he keeps pushing back the time. I can’t drive yet, I’m 15. My mom doesn’t want to go out to pick him up because he’s doing this. I’m crying..like a lot. He gets to see his best friend everyday and then he pushes me off on the weekends to hang out with him. Am I being immature or is he being a jerk? I just really want to see him. If we don’t see one

another, we argue a lot. We go to different schools so it’s not like I can just see him at school.

UPDATE:

I saw him today!!! He explained himself and he was helping his best friend move. I love him a lot. He apologized and I felt super bad though..but I kissed him a lot and I tried to make up for it. Thank you for your comments!