So, aside from the whole "I'm a virgin" thing, what was she like? I can't see how, in all honesty, unless you yourself are deeply religious and of the not wanting to have sex until married belief, it should really affect you? Sure, it might have come a bit out of the blue, very early on, she might have just wanted to tell you now to avoid any "embaressing" situatons further down the line were things to happen, she may have been nervous and just blurted it out etc, I don't know, but unless you're just looking to give the little fella a catbath, I really can't see why you're letting it get to be such a big deal.
In all honesty, sort your mind out and take her for her, not for her sexual past/lack thereof, if you have gotten over the "shock" and don't want to see her again, due to that or other reasons, then fair enough.