What exactly do you want to turn off?
The random chat amoung your companions on the road?
The somewhat flirty dialog options?
Or just the date cutscenes?

Because if it's just the latter, those can't be triggered by accident. Even if you pick all the "correct" dialog options and have the companion approve your behaviour you will get a prompt asking: "With whom do you want to share your night?" Just select that you want to sleep alone and you won't see those scenes.

Last edited by Brir; 09/08/21 09:37 AM.