I'm not on Android but I think you need to have unlocked deviant modes (the mc becoming more dominant, at least in sex scenes, as a result). You have to agree with her on the chocolate mint cookie, that it doesn't taste good, a topic then be more dominant enough that the option to f*** her becomes open, all in your first meeting.
Another one where it comes up is in Cindy's 2nd meeting. You need to have picked the path where you don't meet April when going back to the power plant and instead get captured sneaking around. The option to go rough with her will then open.
I think those two scenes are related to opening up deviant mode in Riley's 2nd scene where the option to keep going appears.
Again, this is just conjecture on my part.