You're a talented developer and Project Hotwife has the potential to be one of the best of its kind.
However, you should take a look at the character development. Both Ed and Merry have a back and forth development that, in the end, results in no development at all. The characters need to commit more to the choices of the player. If the player is trying to keep Merry virtuous, then that pretty much fits the way she's behaving in the game, but aside from that. She's not anywhere near promiscuous enough.
At the current length of the game it wouldn't be weird if she had gone through 5 or more sexual partners, but she hasn't. She's still faithful. There's no point in doing this other than blueballing the player.
You've had a lot of interesting situations in the game that could've gone somewhere sexually, but every single time it ends in a nope and another opportunity wasted.