Would ImO perfectly go along with a
poll:
"Who`s the keyholder to husband`s/boyfriend`s chastity device?"
with the following possible options (to choose one from)..
(o) "Bull(s)" / Lover(s)
(o) Wife/Girlfriend
(o) someone else / none of the above (please explain in reply)
(o) it changes (please explain in reply)
(o) we don`t do chastity play
...for example.
@Cuckcd: Care to create one?