<human>: Can you condense the text into a few key points?

I am 27 I have been with my current GF (24) for almost 4 years now. She lives with me in my house and has for about a year. Lately, as in the past 5 or so months we seem to be fighting way more than normal. Yesterday was the first time that we had two large fights on the same day both about small issues. Those issues are masking the general unhappiness we currently both have in the relationship. It seems that this all stems from our inability to change to suit eachother.

I do love her but I can't keep fighting with her like this. I think at times it might be better for us both to break up. We seem like we don't have much in common anymore, and at times are just miserable in the relationship.

To complicate matters I am the epitome of anti-social and she is the epitome of dependency. 

The friends who I used to hang out with have moved away and pretty much the only social interactions I have are with her. She is the only person I spend time with, and talk to. I don't really interact with other people, besides the handful of folks I work with (who are all married guys most with kids). My daily routine consists of going to work then coming home. I don't really like to go out.
 
She hasn't had her drivers license more than 6 months and doesn't have a car. Thus she needs me to drive her to everything or needs my car to drive herself. She also doesn't have any place to go if she moved out, and doesn't really have a concept of being on her own. As she has never really had to do that before.

I worry that if we do break up I will be completely alone since I have no one else to hang out with, and no one I regularly talk to. I also worry that she wont have the means to take care of herself if we separate, and care about her too much to just kick her to the curb. 

I'm really not sure what to do.
<bot>: I am uber anti-social and thinking about breaking up with my long time girlfriend who is highly dependent on me. Not sure how to get past this.