Is there any magickal use in virginity? Or at least in females, considering the entire fuss religious traditions make over it?

I've been wondering about this for a while and I can't seem to find anything relevant to the question that isn't biased by our christian heritage. There's a good bit of magick centering around sex, but I'm reluctant because the opposite might be just as true. I'm loath to just have sex for shits and later discover a branch of magick that specifically asks for this!

Does anyone here know something about such a system? Or how the hymen virginity relates to energy? I vaguely recall one of the grimoirs asking for a female practitioner to also be a virgin.