How to tell if a guy is flirting?

[sunny02]

So I generally am an oblivious person, and don't know/can't tell when a guy is flirting with me but I do just fine when I see someone else flirting with another person. How do I tell if he is flirting?

[Guy13]

Nervous, stare when not looking and no eye contact when you see him….

[Wise4myage]

He gives you lots of compliments and pays a lot of attention to you, more so than just a friend.

[In_Trance]

pay closer attention