I have been playing in a Bunco group for (mumble) years, and we have seen each others' kids turn from toddlers to teens. One just had a baby after years of TTC. One is divorced. Several of us are looking to have kids off to college. This group is beyond PTA or Scout moms, we KNOW each other.
I know of one group that has been together over 20 years.
It is a monthly touchstone for me. Some of "the girls" I only see at Bunco, while others I see weekly and consider close friends.
When I host, it is the one time a year I treat myself to a house cleaning service, and my family KNOWS to help decorate and prepare, and then go away so I can enjoy the compliments from my group on my lovely home. (just don't open the closet there!)
we talk about ... everything.
And we laugh, a lot! Sometimes, we even have a special request/prayer request at "half time" (after playing 6 up, but before playing 6 down.)
And while I truly believe there is not a thing I have said that would surprise DH, it is fun to "let my hair down" and relax.
Hopefully Mr. Amy had a one time slip.
Most of the husbands in our group seem to enjoy Bunco- they get a clean house, a happy wife, yummy leftover special foods, a relaxed wife who might have won money or a prize, bonding time with kids or time alone to do what they want without interruption, etc...
Whoever invited Amy to the group needs to check with her that Mr. Amy will not be a fly on the wall next year.
Once is an anomaly, twice is remembered. There might not be a third time.