Help Me Out: My friend thats a guy, told me he has a crush on me?????..?

ive known my friend.nolan. since 6th grade and then he moved and came back to my school. and well. ive talked to him several times before. and then yesterday well. (today) He Hung out with me and my friends at school. basically all day. and hes awesum he has amazing storys about him being drunk with his friends and alll this crazy stuff hes done. where he use to live. so i have fun talking to him.. but since im a nice,friendly person. (girl) i think i led him on into thinking that I like him like him.. but i really have no attraction to the fact that he does pot. drugs. hes been drunk alot of times!. and a few. miner details about his looks.. and well... i told him i dont like him like the way he likes me.. and he doesnt really care. he's just glad that im letting him hang out with me. (even though he should of known that he can always hang out with me. with no promission). and well. he even asked me. after school tomorow if he can kiss me. and well. i said. "um sorry. no" and he said "its alright. it was a weird question".. and well. he wants to walk with me tomorow and im afraid he's going to try to kiss me.. but i dont want my (first) kiss to be waisted. on someone i will never see. again. since we'r all going into different high schools... sooo i just ah im just tooo nice!.. and i dont want to be mean at all... but HOW DO I JUST MAKE HIM UNDERSTAND THAT I DONT WANT A KISS FROM HIM. OR A HUG. OR HIS ARM AROUND ME.. I ENJOY BEING SINGLE. AND I DONT WANT A FORCED RELATIONSHIP....???? help me out here... :(