Thiss guy... please help!!!!!!! easy points!!!!!!!?

ok. so theres this guy i really like! k. and like a week ago, there was a dance. and he hugged me tons. and lifted me up and told me he loved me ( i know he doesnt for real..) and like a week ago he would "push" me in the halls and stuff. but now he stopped! what do i do?! ohh.. in study hall the other day. he took my pencil pouch cuz i was drawin in his planner and i have tons of notes from friends in there and he started reading them! and one said i kina like 2 of my brothers friends and it said his name on it!!!! and he could tell i wrote it! and now he will talk to me but not as much? what is up? and ya today in the hall.. he was walking w one of his friends that is a girl and he put her arm around her and then looked back at me?? what? help plesssssssssssseeeeeeeeeeeeee