I haven't even told me wife I started cave diving.
We have a strained relationship at best (read this as we exist in parallel universes), so when I started training last November during a "stop" on my way down to the Keys; I just never brought it up.
She would be more concerned with the money vs. my safety (sort of funny as I already owned 3 sets of BP & Wings a set of doubles and more **** than I can list). So I am operating from the don't ask,don't tell philosophy
I did tell me son who is OW certified (as is my wife) with a reasonable amount of diving experience.