After 1st playthrough I say my 2 cents:
It has potential, but I think it has some work to be done on graphics, story and writing.
In deep: in the intro we are told the couple spoke about the MC fantasies some times, never leading to anything, with Anna being reclutant. All of a sudden, after a simple "hey, look, I found this website, I registered myself as well as you" she gave in. I bet all of my ex's would have at least asked what I was thinking to do by creating a profile on their behalf in such a website.
Some of them would have probably had a fight with me for doing that.
I mean, the part where you build it step by step it's completely missing, it's a minus to me, because it gives less reality to the game. You simply go from nothing to her showing off to everybody, suggesting a man next time they will meet maybe he'll be able to touch her...
The married couple your wife is working for: only me is finding let's say awkward what happens when you meet them?
If I had cameras all around my flat I would be really discreet about them, surely not showing them to a person I'm meeting for the 1st time in my life, neither showing him I spied his wife in the bedroom.
How many do you know asking you if you would like to fuck their wives at your 1st meeting? Come on!
Art: good but some animation would be appreciated, or at least a couple of images more during sex scenes, the possibility to decide what to do too.
Some more effort in writing could do a lot, characters look bidimensional, flat... And if the game is about complicity and swinging I think it should make you see things from chacaracters point of view in deep, or at least to try to.