I can envision several scenarios where this would end badly.
Like any of them where my daughters were involved.
MARRIAGE! THEN SEX!
Not terribly rational on the face of it, but it's a winning sociological strategy, and kids learn better when the message is simple and repeated often.
I had a complete porch shotgun that actually never got put together until both girls were married. It stayed next to the rocking chair, ready for yet another cleaning. Shovel leaned up next to it.
/johnny