I miss him so much he broke up with me saying I'm too childish. He can't take me anymore but I really think he's being immature and mean. I pissed him off 3 times he claims he can't take me anymore but I don't know it seems like he has deeper issues because I really do think I was a good girlfriend. He loves me but he just doesn't want to be with me

Then leave him alone and get someone that feels the same as you do, and WANTS to be with you and put up with your crap.

He no longer does.

Sounds like you and him need to take a break from each other, just for a short time,
Maybe both of you develop and mature and finally get back together if its meant to be.