based advice. turn the musings into a muse. sculpt, model, dress up characters in games, make up stories and post them anonymously, etc. it is great fun, and if you turn him into a character, he will be a cooler version of that guy.
alternatively, masturbate so much to him that you get bored, it worked for me sometime as i exhausted every fantasy scenario. the best one though is to develop a new crush, one that would get you interested in urbanism or computer science. it could be an attractive teacher, another classmate, or potentially a hot youtuber on this topic. i am not good with forcing crushes but once i am bored of an old one i easily transition to a new crush. i think this dude is just your type and you've discovered this for the first time. i am really into dudes that look like a mexican jesus, so at one point i tried finding models with that style and found some porn list of guys with long hair. i still think that's the hottest look a guy could have and i am kinda ashamed that i am so autistic about a type but if moids can have types for boob and butt size i think this is fine too.