I need help... again... (read intro) (please)

kay, theres this dude that goes to a perokial in my area, and i met him at a forensics thing (the bus that took our group picked up his school, it was an assignment for them) and he added me on facebook. i talked to him for awhile and i asked him why he added me, and he said it was because i was cute. then later (in time, like a month later) he said i had a nice butt. and yesterday, he said he liked me. i dont really like him, i mean hes nice, but no. and i really dont want to hurt his feelings.