Please read!! Does this mean a guy likes you?

[bananas]

We're both 19, we had a small conversation at the checkout of my work. The next day he sent me a friend invitation on facebook. I hardly get on there, so 4-5 days later my friend texts me saying that guy messaged her asking about me. I accepted his request and later he sent me a message asking me a funny question about one of my pictures. My friend and I have seen him from highschool, he was in a grade above us. I think he is semi-cute, i've never been in a relationship before and I don't get much attention from guys. Does he like me? Is he thinking a friendship or a relationship? I haven't messaged him back, I don't know what to say or if I should flirt? I'm sooo bad at this. Also, my friend tells me he hasn't ever been in a relationship either =P.