It's Just A Game

In the very near future, VR-like simulation games are a popular form of entertainment. The protagonist believes he has worked out a way to make them multiplayer. However, this lands him in an awkward situation with the company behind the technology. Now that he has a window into the fantasies of those closest to him, how will he change? How will they change?
Note:
This is not a dating sim, or a romance story. It leans much more toward an erotic sci-fi suspense/thriller.