Consider the possibility that this girl might have some serious hang-ups about sex. She might have been assualted, or her first time might have been particularly horrid, or she might be from a religious background. You won't know until you TALK to her about it. Don't just go around not saying anything.
Have a nice, adult conversation about it. Be understanding, and if you do decide that it's issue enough not to continue seeing her, let her down gently. Chances are she's run into this issue before.
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Sage knows our mythic history, King Arthur's and Sir Caradoc's
She answers hard acrostics, has a pretty taste for paradox
She quotes in elegiacs all the crimes of Heliogabalus
In conics she can floor peculiarities parabolous -C'hi
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