A: He can. Spend more time with him. And sit close to him and see how he reacts. He also maybe doesn't like you. I have a guy friend exactly like this and we talk, walk place , and hang around a lot but we definitely don't like each other.
A: I think it's actually ok but don't get into serious flirting just stop when it get to much. On the other hand I think its kinda wrong. I mean if you real like the guy ur going out with. Why would you be flirting?!