Why do i feel like this?

there's this guy that i'm not sure why but i can't get over him. i saw him at tutoring when i was in gr. 7 and like i left after a month because of some school conflict and ever since, i can't get over my crush and i can't get over him. i can't talk to him or anything because it's impossible to find him or look for him in a way. sorry if it's pointless but i just don't know why i still feel like this.