Older guys

So I recently started dating a senior at school. I'm only a freshman and I'm a little worried about him leaving for college. I want him to go of course, he's so excited and I want to support him. He'll be a few hours away and he'll be able to visit but it will all just be, different. I trust him and I don't think he'd ever cheat on me, but I'm just kind of upset and I'm going to miss him so much. I don't want to tell him because I don't want to make him feel bad about following his dreams. Does anyone have any suggestions on long distance? Any advice would be appreciated.