Fake or Florida

So bear with me here. I'm 15. I met my boyfriend over spring break in the sunshine state. He is going to be a freshman in college next year. We were just continuesly hooking up throughout the week. He left and we stayed in touch. Time passed and our relationship grew. He is coming down to stay with my mom and I for a week in July. We have a really good bond ,and I've never been so close or honest with anyone ever. Just recently we decided we would try to make it work long distance, but we both are hestitant about what it will be like when he leaves for college. The idea of him going to college and possibly replacing me is terrifying but possible. Is this crazy or worth it?