I'd like to suggest a button that shows up during any companion dialogue where they try to initiate or show interest. Similar to the two swords "interrupt with attack" button, but with a crossed out heart instead. When they start getting creepy or annoying it would be great to press that button to give a generic "Not interested, sorry" which cuts off the conversation in a generic way.

Boundaries, please.

After reading through some of this, I feel lucky that my first playthrough was Dark Urge and I accidentally killed Gale, and also didn't get Wyll, Halcin and Karlach.