I think i like somebody but i'm not sure help???!!! :s?

uhmmm..well i've been knowing this guy since last year but i never talked to him last year..i always saw him around in school but..i didn't care much about him he was like everyone else...and this year he began talking to me..and well we've been friends almost since this year started..i think he is very friendly but and last night i dreamed something very weird he was in my dream..and i don't know if i'm thinking a lot about him...sometimes i think well " i think i like him" but then i'm not sure ..and sometimes i feel that i don't ..i'm very confused..cuz i didnt like him b4 at all..i don't know if i lke him..i'm not sure about wut i'm feeling..and also i'm not sure if he liked me ..bcause i don't see any reason y he started talking to me..after one year....when we become friends this year ..well he was kind ..he behaved in some way that i thought one time that he liked me..but then..now everything is different..he changed his behavior..and now i don't know wut to think..i don't even know wut i feel.. i need some help to find out if i like him..and if he likes me back or at least to know if he liked me b4.....Please help!!!