well my current gf had known me for like a year and was flirting with me for the whole time so i reckon you should tell him how u feel in a serious way just you and him alone.

Well, I'm told that I'm flirty at times but people mix it up with being kind/friendly also.

But, would he flirt with you if he didn't think of you in a certain way? I'd go with finding out if he does. ;x

u can just give him a chance if u really want to be with him, but try not to rely on him very much and dont give a lot on this relationship in order not to get hurt.. but u never know, he might likes u a lot, why miss it? just be careful. u will soon can tell if he REALLY likes u. if he still have feelings for the other girl, let him go!

something like that happened to me once and it ended painfully and miserably

There was this guy i went to school with and I had a major crush on him! I mean, like daydreaming every time i saw him (which was a problem coz he sat across from me). Then, one night i slept over at his place and he gave me a note that said "I like you" so me ofcourse believed him. So, the next year or so went away with out us talking on the subject, but i still thought he liked me so i wrote him a note saying how i felt about him and he told me that i was an idiot and was too young to feel that way about someone, so i wouldnt believe him, it could end in heartbreak!