If you like him back, then flirt back :) But you should first think about if he is really flirting with you or not, because it could be disastrous. If you don't like him back, then just act as you would normally around him.
That's no friend - dump her.
You could start out with flirting.
He'd say it
Try flirting with her, if she likes you, then you're lucky, if not, then accept her as your friend
Look at it the other way around. If he was with you but flirting with your friend. You should probably tell your friend.
This my friend is called: flirting.
Um, totally! I am a girl and my guy friend is hanging out with other girls and flirting with them all the time!!
Well then it shows that you have feelings for your guy friend. You should step back and see what (better yet who) you really want.
This can mean only one thing: love is in bloom.
It's a stupid way of flirting with him.
a guy is flirting with you if he is calling you nicknames or making you laugh
what you do is you sabotage the relationship by flirting with the guy then take him