As a christian i feel like that is not even a question.
Sexual purity, even as not a specifically religious idea is something that everybody should look for, to contain their virginity and purity for only the person they truly wish to marry.
To not whore their bodies to whoever simply wishes to hit it off. It is quite simple, this goes for BOTH men and women. I am not a hypocrite. If you decide to have a relationship with someone that wants to wait and keep the special moment and is not totally eaten by the sin of lust or have a relationship with someone who has already had sex with 30 other people, which one seems like the relationship that will be more stable in the future? Where you can feel safe and not paranoid that you will be like the other 30 people?
Simple.