Is my friend a ? (he's 15)?

There's this kid that was a freshman when I was a senior during the 07-08 year and well I always suspected he might be he hung around me all the time like I was his big brother but sometimes suggested that I should allow him to perform fellatio on me I'm bi and wouldv'e loved that but he didn't find that out about me until later and he's always play it off like he was joking. He's a skater boy, kind of has that stereotypical lisp, always wears purple, and recently he uploaded some pics of him kissing some male friends on the cheek to his MySpace with people commenting things like "I've known all along." Actually, someone also suggested that he wants to go out with me but he's going into 10th grade and I'm going into freshman yr of college. Do you think he is? If yes, should we date?