This response will vary by relationship. On one hand the option is they’re ok with it. Or the other is they feel you have been sneaking it around vs just talking about it before doing it. It could go either way.If your wife came to you and told you that she's been posting her titties online for people to see without your knowledge what would you say?
Real lifeIs this about knowledge or permission?
With a partner of any gender in mind.
Nilla Answer: At last! I have wanted you to do something like this for ages, now please keep surprising me. If I am with you will you show and do even more in public?
D/s Answer: This might be humiliation, provocation of punishment, arousing and teasing, etc. It depends upon our roles, contract and checklist. Situations like this should (however generically) be worked out before serious play. Then permission and knowledge are different.
Personally if it is nilla it would be good, and D/s it should be good for me, Then everyone is different.
Is this a real life or theoretical question?