I'm suggesting we call sex something else, and it should include everything from kissing to sitting close together.
Every family is a "normal" family- no matter whether it has one parent, two, or no children at all.
People make institutions, not vice versa.
Where there is lasting love, there is a family.
Fortunately the family is a human institution: humans made it and humans can change it.
You cannot decree women to be sexually free when they are not economically free.