Well, as far as I know, "virgin" is kind of an all-or-nothing concept. You've either never had sex or you have, I don't think there's really a ... reset button.
Are you talking just generally or are you looking for a moral/religious perspective?
Well, generally speaking, I don't think you can become a virgin again by not having sex for a while, because, having had sex in the past (no matter how long past) means you're not a virgin, by virtue of the definition alone.
I think the same probably applies in a religious perspective, too. If God says that you must be a virgin until you're married, I really doubt there's a loophole that says something like "well, as long as you don't have sex for 5 years before marriage, you're good". There's always absolution for the Catholic crowd... haha
-Sarah
Goodbye you liar,
Well you sipped from the cup but you don't own up to anything
Then you think you will inspire
Take apart your head
(and I wish I could inspire)
Take apart your demons, then you add it to the list.
People who think because they accept salvation from God, or whatever religion they may choose from, or no religion at all, and say they are now virgin again are fooling themselves. Like Robbo said, all or nothing. You can't erase the past.
<nam_kablam> I'll be naked holding a ":O" sign while pumping their door