The more I think about it, the more I mistrust the facebook post. Why would she say "this is not just for show" if it was honest. Thou doth protest too much, as they say. When I am being honest, I do not start out with saying "I'm being honest here." Maybe Jesus did with his "verily, I say unto you..." But most of us do not.
OK, not to go all Ross-Perot-there's-a-little-green-man-behind-every-shrub on y'all or anything, but . . .
Am I the only one wondering if perhaps this other couple are SWINGERS, or maybe OW's H is a cuckold?