If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
That's an obvious point.
I don't think such questions exist to the extend that the answer is much different.
Is it usually wrong for two 13-year-olds to have sex with each other? What about a 16-year-old and a 13-year-old? 20 and 13?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.