How do I get over someone I can’t have ?

Sorry this is soo long

Met a friend let’s call him Charles but we were not really friends like 3 months ago. Nothing really happened I just realized he was interesting. Fast forward last 3 days met him again we hit it off so much his best friend was like I’m stealing him from him. He is so hot tho just my type muscle bear. We hang out for about 3 days. Not back and forth. I’m in a hostel in uni and he was staying with his best friend for 4 days ( I think) in another hostel. I’m gaming buddies with his best friend so I go to the best friends place to play games. It was like I and Charles were meant to be. He made me laugh, I made him laugh. He even caught the reference on my Snapchat bio(very niche reference btw). I even liked him more. I tried throwing subtle signs here and there but nothing. Hands on shoulders etc. he was laying on the bed and I even positioned myself seated so that his dih will rub on my ass and maybe get something going fyi this was really subtle. No one would have realized only I and if he was gay him. On the 3rd day of gaming did the rubbing happen but after I tried I thought ohh maybe it’s too subtle so I didn’t wanna push it.(it’s a pretty decent bed. I was sitting at the edge there was enough space but he also brought him self very close to me and it actually happened his dih was kinda on my back and ass. There was space but that was what happened) But then he went on a video call with a girl for a while and I thought ohh maybe it’s his sister so I kinda brushed it off hoping something could happen between us. But I will try and find out who that was. I might never see him again but because of where I am and to stay safe I’m gonna close the case on my dream boat and just conclude that he is probably straight. The problem is I can’t stop thinking about him. His voice, his laughter, the humour, the jokes, his body I was even fantasizing me and him together anytime I see corn or just a couple. I want to get over him

Ps. I’m from a really homophonic country. Getting caught could get you killed, lunched, prison time that’s why I couldn’t be direct