Sex will be the farthest thing from everyone's mind in a societal collapse.
I am not a Christian who presumes to speak for God.
I may have a hunch and operate on that hunch, but everyone I come in contact with has a purpose in my life. I believe the people I come across are by God's design. Every person I meet informs me in some way.
I have never felt the need to save anyone other than myself.
Another goal of prepping is to widen the circle of prepped friends and contacts.
In a TEOTWAWKI situation, the allies I will choose will be those who are prepped and can bring skills to the situation.
What goes on behind the door of any person's zipped tent is of no interest to me.