Relationships, sexual or otherwise, are not subject to paperwork. The days of relationships, sex, or even reproduction being tied to marriage are long gone.
It’s stupid because the combination of singles mixers, tinder, and community events make it very easy to find a partner (keeping them is another story) but nobody wants to try. I’m of the opinion that porn has sapped their will to find women, even though it’s very possible to have a healthy relationship with porn and men have indeed had healthy relationships with porn throughout recorded history.
Having all of your sex come from porn is like having all of your meals come from McDonald's. And that's a choice you can make. It's probably not the best choice, but a fair number of people do in fact make it.
Because stringing along some poor soul that looks for actual relationship and let her waste months to figure out this relationship was never going to happen sux.