What would you do in this situation

Hey everyone, this is more of a venting post but advice would be welcome too. So basically, I have only ever had one boyfriend and we dated for around 5 months last year and he was pretty much the only person I've ever been interested in for the 20 years I've been on this earth. He, unfortunately, was an exchange student and that was why we broke up at the time he had to leave (he would also not return for a long time so a LDR wouldn't really work out). We broke up 6 months ago and we've kept in touch ever since, because both of us wanted to stay friends and here's where it sucks. He's been in my mind pretty much every day these past 6 months and my feelings for him don't seem to want to subside. One time I got drunk and told him I still had feelings for him like an idiot but thankfully he acted like that never happened (during the first month or two he was gone I would tell him I missed him but i noticed he'd try to avoid or change the subject maybe so it wouldn't be too hard on both of us given the situation. He still does that but probably because his feelings for me faded already idfk). I tried meeting new people from tinder and grindr and all that to move on but people there just want to have sex (here anyway) and I'm not into that. Plus, tbh, I'm kinda socially inept and meeting people IRL is difficult for me. So what would you do here and thanks if you read this freaking wall of text, it's very much appreciated.TL;DR I've had 1 boyfriend my entire life he was an exchange student we broke up when he had to go back home it's been 6 months and I still like him and I've tried moving on by meeting new people but I'm socially inept. What do