<human>: Can you succinctly summarize the text in 1-3 sentences?

My boyfriend and I have been dating for 2.5 years, and we are both about to be seniors in college. 3 months ago, I realized that we were too different to stay together long-term/ after college but didn't want to break his heart by telling him during the summer. Our differences include interests, career goals, lifestyle preferences, etc.

Two weeks ago, when he was discussing our future plans, I couldn't bear to lie to him and confessed my recent feelings. I specifically said that there was no way I could see us together after college, and that it wasn't because of any inherent flaw of his but rather because we were too different.

Naturally, this upset him greatly, but he suggested that we just stay together for a little while, as we figure out our relationships. Neither of us wants to date anyone else (I still love him) and we go to a very, very small school (total undergrad population < 1000) and would thus run into each other all the time.

What should I do? I would honestly prefer a relationship with him until the end of college, but I feel selfish and cruel to him. I have already decided that we will break up after college, and he doesn't want to.
<bot>: Told my boyfriend I don't want to be with him after college, but he wants to stay together for our senior year and then break up.