I think the way she came downstairs in lingerie and what she immediately said should have made it already obvious for mc.
But anyway I'm personally not into long periods in which the mc doesn't know, not my kink, so I look forward to how the characters will react after it's exposed. For example, I wonder if Riley knows and lied to mc, as she was there in the party.
I understand the guy earlier in that thread who said he would like a route in which mc could maybe accept sharing his gf willingly without being a slave. Normally I'd be a bit like that too but here I was surprisingly into the scene in which Riley described her former slave bf, I admit. I won't lie, that girl has a special appeal. I was thinking regarding that ex bf "well if I follow what she said she would have kept him if he continued to fuck her too then : D ?" , hopefully a possible ending for mc ahah.
Sorry you must have loads of people saying what they would like in your game. Don't worry just keep up the good work.