I'm in high school but my boyfriend is going to college

I'm a senior in high school and my boyfriend of 2 months just went to college. We started dating at the beginning of summer, both of just looking for something casual, but ended up really caring about eachother and before you know it developing a serious relationship. I knew he would be going to college so I had prepared myself for a most likely breakup but he early on initiated conversation about us and that we will stay together when he is in college and that he has no doubts of it not working out. Granted, he is only 15 minutes away and I will be attending college 2 minutes away from his next fall. But I am still slightly worried. I trust him fully but I am afraid of taking away from his college experience. While I will attend as many parties and college fun with him that I can, I will still be a high schooler for the next two semesters. I am willing to work for our relationship and can't imagine life without him, he is my absolute best friend. In conclusion I don't exactly know what I'm asking except for advice in this relationship and some honest experience and opinions. Thank you :)