I suppose it's possible they get seen by someone, but it depends where they do it because they just have to be in a public place and not necessarily somewhere out in the open where they'd be caught. Makes me wonder about this
Discord avatar pic that
mpa71824 posted where Maya's all glammed up and it has me thinking that maybe the MC and Maya or the MC, Maya, and Josy go out on a date and they find somewhere in a restauarant or bar to have sex. I also think that between Josy and Maya, Josy will be the person who's most up for it and Maya will either video it or take pictures as proof they did it.
If they were to be caught, I think a character like Quinn, Bella, or Tommy would be better characters to catch him than Sage. Quinn could video it or take a pic to use later to blackmail the MC into doing something for her, Bella would be pissed because she'd see it as a betrayal of Jill (hypocrisy not withstanding), and Tommy would be raging at not only the MC but also Josy and could add more to his soon-to-be anatgonistic relationship wth the MC.