OK, sorry, I misunderstood. I don’t think couples need to include “cheating” in their vows as an expectation; that’s weird. I think couples need to talk about monogamy — do they like it, are they good at it, are they choosing it willingly, etc. — and decide whether they will always be monogamous or be open to consensual non-monogamy and, if so, how and when. No one “needs” to cheat nor should it be an expectation, but everyone needs to have conversations about monogamy. https://omgchronicles.medium.com/the-conversation-we-need-to-be-having-2f660d2822e7