Sounds like you've already made up your mind, then -- why bother asking us?
FWIW, I agree with the concept that you're likely to be pushing: no girls sleeping in his bed while he's in it too....
As a practical matter, you probably know you're going to have to deal with the unpleasant responses from both your son and your wife (no matter what she's telling you now).
I do anticipate my wife to get cold feet when I lay down the law, but I’m not worried about that. I have to do what is right.
I only asked FR for my own validation, and I have it.
Thank you all.