<human>: Can you provide a brief rundown of the text in within 3 sentences?

So I don't have many friends, and my girlfriend used to be one of my bestfriends. We went to the movies, I thought it was just as friends but she thought it was more, and now we're in a relationship.

Now I am completely regretting this whole thing. She's beautiful and an amazing girlfriend, but I don't think I truly want a girlfriend. Pretty much every single one of my relationships have ended this way, so it was just stupid of me to jump into another one. We don't have /that/ much in common, and to be honest, our personalities don't match that well. I think we'd be better off as friends. 

My problem is that I want to end it, but I also want to stay GREAT friends. I have dated my friends before, and after the break up we never go back to the way it was before. ( which also why I don't have many friends ). 

Does anyone have any advice for breakups, but remaining good friends after? It'd be so much appreciated. Thanks <3
<bot>: I accidentally started dating a very good friend, but I want to end it and go back to when we were just friends.