Phoenix (aka Jean Grey)
How would you like to date a telepathic girl? You'd be tempted to try to get on "Who Wants To Be A Millionaire?" while she'd be sitting at home with wikipedia at her fingertips sending you answers with her mind.
As long as you didn't mind dating a girl who could read your mind.
Come to think of it, I think there are some females who can pretty much do that already...