There are lots of great points in this thread, even the original point can be considered a good resource for anyone curious.
What isn't great is the situation that some are referring to.
All it takes is a simple whisper, asking if it's alright to approach two people that are very clearly in a scene together- especially if you have intentions to straight up halt that scene.
Not a whisper after they've politely removed themselves from the situation because they didn't want to participate in your flavor RP stating that they've been blacklisted.