<human>: Back story: My ex and I had known each other since we were kids, ended up being high school sweethearts, and dated for almost three years. I wanted to continue the relationship as we went off to different universities after graduating high school. He told me that he thought it was better we broke up for college around March of our senior year of high school, because he wouldn't "get to see me everyday". Every time I tried talking to him about it, or asking him to reconsider, he would give a stern "we already talked about this" and usually ended up fighting. I broke up with him promptly after graduation.

We kept in touch a little bit throughout the summer, but I ended up deleting him from all social media due to frustration with him not wanting to try a ldr.

We caught up for coffee thanksgiving break of our first year of college, after pretty much not communicating for 3 months, and it was nice. Afterwards, I sent him a text asking what he thought of me, assuming that we could move on from being exes to being friends that we were before we dated. He told me that he missed being with me, I agreed, and we agreed to try easing into a relationship again, ultimately deciding that a conditionally open relationship (no mutual friends, no one in our home town, no one when we're in the same town at the same time) would work while we're at college.

Now, we're about to go into our second year of college, and I'm considering breaking things off. He's living in an apartment with three girls as roommates, no other guys, this year, one of which I have an awful gut feeling about already because he's told me how attractive she is.

Before we broke up, I could have seen myself marrying him, but now I don't know if I can see us staying together after college. I realize that I'm still young, but I don't want to stay in a relationship if it's not going to go anywhere. He's my best friend now, which is why I feel so conflicted, because I know that if I call it quits, that will fade as well.

Provide a brief overview of the text.
<bot>: My ex and I broke up because of distance and conditionally got back together, but I'm thinking I should end it because I don't know if I see a future with him