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

Well, me and my GF have been together for almost 2 1/2 years now. We've had a couple separations in the past. Our relationship sometimes really struggles, but it eventually seems to pull through. But not this time. 

I had just separated with her in mid May. About a month and a half later, we decided to get back together. We decided that we both wanted a fun, light heated relationship this summer before I went off to college. She knew it would be just for 8-ish weeks and then it'd be over. We both agreed and started right back up.

A couple weeks ago, she said she wants to continue with a long-distance relationship while I'm in college. She says we can make it work, but I never wanted a LDR. I say that we can at least try.

Now I'm starting to again realize how much I need to break this off. We just wouldn't work in a long-term sense. There are too many things about here that I just wouldn't be able to accept when living/ spending my life with her. Because of this, I want to break it off.

Here's where things get really awkward and bad. I leave a day before her birthday. I don't know when to break-up with her. She currently thinks we're going to continue the relationship while I'm away, but the relationship just can't continue. I don't want to break-up with her the day before her birthday, that would just devastate her and ruin it.

What do I do?
<bot>: Girlfriend wants LDR from college, I need to end the relationship. I leave for college on her birthday, and I don't want to break-up right before that.