Girl at a Bar. Your Play?

[Cunning Linguist]

You're in a bar and a nice looking girl sitting at the other end catches your eye. She is sitting with two girlfriends. You draw a tic-tac-toe board on a napkin, put an 'X' in the middle and send it, along with a pen, to her via the waiter.

A few minutes later the waiter brings it back and it has 3 'X's across with a message: 'I win!'.

What is your play?