There are a few things that make me think he likes me: we met in Speech and Debate and he was infatuated with my abilities (mostly my sharpness (maybe even snideness)), he leaves his closer friends to sit next to me in Student Council, he sings along with songs to me, he picked me to relinquish his NHS seat to, he occassionally tugs on my hair, he likes me accent (I'm from Philadelphia, and most people out here don't like it), and he calls me "sweetheart". What makes me think he isn't gay is that he had a girlfriend and tells innuendo jokes. Another thing is he said that Lady Gaga is a she-man and that he would still have sex with her anyway, but he said that because he likes her fame.
Could anyone give my some tips to discreetly "flirt" back, I really don't want to be obvious. What should I do if I come to the conclusion that he does like me? I want to entice him further but not seem gay if he isn't gay.
Thanks for any answers!