true story;
when I was area manager for the company I worked for I was having a similar discussion with one of my warehouse managers just after my daughter was born. I mentioned the worry to come and asked him how he coped.
He told me he allowed his 15 year old to have sex in her bedroom in his house.
I asked him why and he told me he knew she was having sex from 14 but could do nothing about it as she would dissappear with the boyfriend(s) even if he confined her to the house.
In the end it was safer for him to allow it in his house as he had some control over it
