Opinions about my 16 year old
I am also curious. You know they are having sex and you accept it, and still you feel you need to somehow keep it under control. Why?
Alcohol is a drug that destroys the life of many. Sex, on the other hand, is generally a good thing that makes people happier. How can you compare the two?
In my life I haven't seen anyone damaged by voluntary sex. I have spent a lot of time in the US and I always find it strange that sex is regarded as so dangerous and decadent. Is this a religious issue?
(Yes, unsafe sex can be dangerous, but that does not sound to be the issue in this case, and I don't think that is the cause of the american sex-panic either.)