I Feel Weird

i normally don't get crushes on guys because i just have hookups and no emotional ties but this one guy is so funny and im having the biggest problem with it because i've never felt anything like it and idk how to handle it.the beginning of the school year we were close, but we got a new seating arrangement and now we dont talk half as much. hes dating someone and talking to some other girl in my class and i feel so shit and pathetic and annoying and idk how to handle this help pls