Need advice, really need it.

So, im a complete reddit novice and usually just browse without an account, made this one to ask this question, but im a paranoid freak so its a throwaway account - here goes!Im a 17 year old guy in my last year of school, from the UK. Recently I’ve developed some pretty serious feelings for a guy in my year, I’m out to 3 people and its very much a secret, although I know a lot of people suspect my “gayness” anyways. The guy I like is presumably straight, although a lot of people do have their suspicions about him too.Long story short, me and this guy have spoken a bit in school and at parties etc. and I can’t determine whether I think he might be gay/straight/bi or anywhere in between.He’s very athletic which I suppose goes against a very stereotypical archetype of someone who isnt straight and as stereotypical and bigoted as it sounds, he doesnt “appear to be gay/bi”. But I have had some interactions with him that makes me think he might be, and if he was that he might be into me. So i’ll just get into it and see what you all think. A couple of times in lunch queues and at parties etc. he has come up to me and grabbed my ass and smiled at me, now whether this is him hinting or just friendly is up to u. When leaving parties before he has also come up to me and given me a hug and complimented me both times saying “hey gorgeous boy” or something along those lines. Also, as much as its a cliché I have caught him looking at me or from my perspective it looked that way a lot in school. A couple of times hes complimented my outfits at parties. There have been some other exchanges too but I wont go into it.Am i overanalyzing things in thinking that he might be into me (hes insanely attractive too, hes been asked to model for well known brands) and im probably a 6-7 on a good day. What should I do?! What do u think?Any help is greatly appreciated cus this is on my mind pretty much 24/7! Who knew crushes could be so painful