Would you tell your partner if you had one kiss with someone else?

[Awkwardusername]

I have NOT done this and don’t intend to before people start having a go - I’m reading a book where it’s come up!

If you would, why? If not, why?
Does it depend on the situation (eg drunken snog, emotional affair, a chance meeting with the one that got away etc)?

Just curious!
As someone who’s been cheated on in the past, I think there are some situations where I’d rather not know.

I would. Firstly, because we've never had secrets and I couldn't live with it; every interaction we had after that would feel like a lie. Trust and exclusivity underpin our relationship. Secondly, because he has the right to make an informed choice about whether he wants to stay with a cheat, and whether he considers a kiss cheating or not. I respect him and think he has the right to autonomy, as I do, so I wouldn't feel OK making him live a lie either.

I would because my dh has been pretty clear snogging is something that would dent his trust in me and I've said the same about him so we'd both know that by keeping it a secret we're crossing clear set boundaries and actively stopping the other from making their own decisions about staying in a relationship where boundaries have been crossed. We might forgive and work on the issues that made the other cross an agreed boundary or whatever but if he kept it a secret and lied and I found out after, I think we'd be done.