I want to break up with my girlfriend because she's jealous and turns the smallest things into issues.
Why would you want break up with her?
She always brings the same issues up and I am over it.
Maybe they are not a big deal to you, but it might be to her. If she keeps bringing it up, I bet it really bothers her.
I am mad that she is not the same person I dated a year ago.
People change but that doesn't mean you're paying attention to all the changes either. If she has new concerns then you should try to pay attention and address them. Otherwise your relationship will be difficult.