I can certainly give some NPCs different dialogues if they are customers of places where you work.
What are you thinking of when you say "groping dialogues"? Could you give me an example of what you have in mind?
In some RPGMaker lewd games I've played, there would be instances where you'd walk past certain npcs and be catcalled, groped, or recognized from past public ventures. By "groping dialogues", I meant you'd get accosted by a random pedestrian, but there was not artwork or a major lewd event tied to it. So it was basically just flavor text.