Not mine.
A friend of a friend regularly uses coke. Not just on nights out, but to buzz days/nights in too. Initial impression was once every few months, but it now looks to me like it's at least once a week. He did a couple of lines before we went to the pub for a Saturday afternoon pint.
He does Mdma too on the big nights out.
He says his wife doesn't take anything nor does she suspect. He operates a don't ask, don't tell policy with her. He can easily afford it on his salary.
Having been married for over 20 years myself, I told him his wife is very likely to suspect he's withholding something from her, but probably doesn't want to know the truth, as it'll be too hard to deal with.
WWYD if you discovered your partner of 10+ yrs, that you had 2 children with, was a regular drug taker? Would you even ask the question in the wife's position?