Seems like because Tori and Steph had plans(stupid ones that make no sense in any context) everyone ignores the fact that Jason betrayed his own friend and work partner for some ass. Jason lied to MC just to bang Steph. He knew Steph wanted a 3some and wanted to test the waters with her husband MC and he knew Tori had no intention of having sex with MC, yet he not only initiated it, but went along with everything. So even if he really didnt know the whole story about Steph he knew that much and lied to MC then fucked Steph. And Tori, who was "helping" Steph, wants to be mad at Jason even though she knew Steph was a degenerate sex fiend, but she served Steph up to him anyway.
Sooo, it doesnt really matter what MC decides to do with Steph, he still has to confront Tori and Jason. There should be an option to steal the hidden money Jason was talking about and frame him for it, then retiring somewhere tropical, filthy rich, while whoring out Steph and Tori to drunk tourists. Regardless, its not just Steph/MC relationship that needs resolution.
Oh and no matter which options you choose or are forced to choose, Steph is a sex addicted slut, and wants to continure being one. She just doesnt want money exchanged or to be lied to or to be deceived or used or betrayed in anyway, but its okay if she does that to her husband. So aside from creating lewd scenes, her story is done now when you think about it. To continue the story from here, it would all have to be about consequences.
...Lol, Steph's confession reminds me of the scene when Neo meets the Architect in the Matrix.