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.
You cannot decree women to be sexually free when they are not economically free.
People make institutions, not vice versa.
Fortunately the family is a human institution: humans made it and humans can change it.
Where there is lasting love, there is a family.