The cuckolding wife has a wonderfully detached attitude. Even better is how candid Gina's friend is. I'm happy to see you again using the double-teaming keyholders idea. I can picture these two women making excuses to pass the key back and forth indefinately.
Interesting ... I wasn't entirely happy with the Gina one, as it seemed a bit complicated. I did like the cuckolding wife though - no matter what their differences, pretty much all women retain their fetish for chocolate!
I've often envisioned a scene where the wife nibbles delicious chocolates while the husband performs unapetizing clean-up duty after she's been with her lover. Perfect for Valentines Day.
I once went to a party where a submissive guy ate out his girlfriend and she used his back as a nibblies tray.