It may be that he is very nervous and when you are talking to him, he may direct his body towards you, even touch you on the shoulder, arm. He may run into you far more often than by chance. Guys aren't that subtle, you don't have to start reading body language to figure out a guy. If you express an interest in him and he's interested back, you'll know.
He may be trying to flirt with you, or he may be telling you that you are trying to flirt too much.
Well some guys dont know it, others can tell... Flirting can be quite noticeable if your trying to hard. When I flirt with guys i do it naturally...some people can.
In my opinion, there is no real way to tell. It has to be an instinct that you determine. For example, if the guy is smiling, possibly blushing, and not able to look you straight in the eye then he is trying to flirt with you and not scare you off. Try flirting back or start the flirt (lightly) and if the response from the guy is a flirt then keep it up : )
Quite simple, his trying to flirt with you.
If he's into you, he'll flirt with you in a way that he doesn't flirt with other girls. Another sign is that he'll flirt with you the most and if this guy really likes you, he'll either ask you out or be rude or kind, it depends on what kind of guy he is.
if a guy likes ur friend he will flirt with her and not u.
its the usual: look,stare,smile, and flirt.
Explain it to everyone and tell them what you think.
if they are hanging around him a lot and if they flirt with him a lot.
text or flirt.
just tell him str8 out but i would flirt first to see how he reacts
he will flirt with you and give you signs that he likes you .. :D