I do know a couple, the wife considers it 'cheating" if her husband looks at semi-naked women on glossy pages. So he doesn't look at them.
My wife, OTOH, once sent Playboy a change of address card for my subscription when we moved.
I would say it's a matter for each couple to decide. Not you, at least not for anyone you're not having the sex with.
So flake off.
Oh, and i lost my ring. Couldn't wear it when i worked in an industrial environment, set it down, lost it somewhere. And yet, haven't chested on her inthirty years w/out it.
She lost hers, same time, same readon. It's not the ring tgat matters, it's the promise.
So, again, it's for tge couple to decide. Not uour business.