Sorry to quote myself, but I've just wrote this on another thread:
Quote:
One thing I've noticed awakes jealousy in women is checking out other girls. I don't do it on purpose, but I've noticed that every time a girl catches me doing that, even if she's just a friend or I've just met her, she makes a mock-jealous comment, like she feels threatened.
Of course that doesn't mean you have to ogle like a pervert. Then you will just freak her out. Do it discretely and don't ignore her.
Works for me.
If she's soemone you see often, like a classmate or a co-worker make sure she sees you interacting regularly with all the other women.
If you're opening cold in a club situation smile at or say hi to some girl passing by even if you don't actually know her. You'll still be paying attention to your target but she'll see you have to divide your attention.
If she's someonen you know already, make comments about other women's beauty.