<human>: Can you condense the text into three sentences or less?

I'm aware this issue is not unique to me at all. I'm currently 18 and I'm set to graduate High School at the end of the year, and move on to college

Here's the issue. I have a very good friend (got to know him in 11th grade, became close friends in 12th) and we're both from very different friend groups, so I find it hard to hang out with him. If I do hang out with his friend group, he actually becomes more intolerable. I'm also aware that I like him more than he likes me

Here's what I want resolved: One, how do I get him to be more willing to hang out with me alone or while doing other stuff? It's hard for me to always ask because it's awkward if he's constantly busy and it seems like I have nothing better to do

Two, we're both going to be going to college. I'm aware that it's difficult to keep in touch with High School friends and you'll typically only stay attached to your closest friends--I think he's a friend worth keeping, but I'm afraid we'll inevitably drift apart and never see each other again. How do I avoid this?
<bot>: I'm really good friends with a guy from a different friend group, I have trouble hanging out with him, and I feel like if we don't resolve this I'll never hang out with him after High School