<human>: Okay, here's some backstory. I've been together with my girlfriend for about a year and a half. We started dating towards the end of our senior year of high school. We dated long distance during our Freshman years and have just said goodbye again for Sophomore year.

Now, for my problem. My girlfriend is great, she's a wonderful person and girlfriend in every way possible. We don't fight often, we have good sex, and our families love eachother. The only thing is...I just don't want a girlfriend anymore. I miss being single and I miss hooking up with other girls. My girlfriend is very attractive but as of late, I can't stop thinking about doing stuff with other girls.

I've made up my mind and I am sure that I want to break up with her, I'm just unsure as to how I should do it. The fact that we have no problems makes it so difficult because I know she'll be so shocked when I break it off. It also doesn't help that I really have no way to explain it to her other than I just want to be single.

I would feel like an ultimate douche if I didn't break it off in person, so I am planning on going to visit her for a weekend and do it then.

So redditors, how should I go about doing this? How do I bring it up? How do I explain it to her? She's a great person and I really want to be friends after the fact (after she's gotten over it, of course)

Can you condense the text into a few key points?
<bot>: I want to break up with my girlfriend of a year and a half because I want to hook up with other girls. We're long distance so I need to know the right way of doing this.