i'm not an advocate of pre-marital sex, though i'd be a
hypocrite to say that. 
like wad jojobeach said, who cares about virginity these
days?
what makes a marriage work? love and trust etc etc. who cares about
someone's past when your partner is now faithful to u?
think of it this way la huh...
guys who r virgins married/dating a non-virgin girl: good for him,
'cos she can teach him how to be better and show him a good
time.
both virgins: both noobs in bed...dunno where put where...all blur
blur and awkward...
not defending anyone. but it boils down to chemistry and feelings.
unless you're so narrow-minded as to let someone's past bother u,
whether she's a virgin or not.