Should i break up with my girlfriend?

If you think you love her, then you need to sit her down and tell her exactly what you just posted here. If you are feeling all of these problems, then you need to tell her. How do you expect things to change if she doesn't even know your so upset about it all. That's the thing about being in a serious relationship. It's hard and if you want it, you have to fight for it to make it through things. But if that isn't something that you want then maybe you should just break it off. It sounds like she loves you. But if you two don't want the same things then it's probably best to not string her along.