Should we break up, do you think?

Okay, here's a story for you all. my names DJ, im going to be a freshman in college. my girlfriend...is going to be a junior in high school. We've been dating for 3 months. We've known each other for almost 7 months...So anyway, my girl is a little too emotional. At this point in our relationship, we've already had sex. (yet she won't kiss me -_- stupid right?) Anyway, ABOUT a month and a half ago from today (6/29/11), she's become overprotective, clingy, and downright ridiculous. She's practically made me given up all my friends (guys and girls), I can't bring up any old stories that have to do with friends, she says she loves me, but with all the fighting we've been doing, I don't know if I can say it back anymore. Besides the giving up on things, she's telling me cliche things (you're the best, you're amazing, you're the best thing that's happened to me, you've done things for me other guys would never do. [guys/girls watch out]) She's so controlling, and she also tells me I'm ignoring her. (mind anyone reading this, i see her almost every day and talk to her day until night constantly) I don't see how I am, when i give her all my attention. She tells me she expects me to surprise her every now and then (mind again i surprised her a few times including the way i asked her out [cupcakes], and valentines day [choc., stuffed dog, song played over the airwaves of the school]. But lately, i've been short on cash and she knows that, and right now I don't think showing up at her doorstep is romantic, it just isn't, anymore. I tell her all the time i'm here for her, I want her to be happy, but lately she's not happy. Even though I do all I can to make her happy. She's making me out to be the bad guy. We've talked about this over and over, i just wanna know, if opinion-wise, we should break up, because right now, that's what i'm leaning towards in my brain.