depends on if she's all high and mighty or not: if so ask her if she would like to enter into a monogamous relationship with you in a funny accent.
if not: ask her what music she likes making sweet, sweet romance to. If she's giggling/takes it well you're set. if she gets defensive accuse her of being a lesbian and storm off in a fit of rage.
I tried the second and got slapped, I guess the chick was actually a lesbian, best of luck.