Sacrosanct
Legend
Interesting. I would normally think that the person who has so little emotional control that they storm out is probably the one more at fault for the disruption, and who should be blocked from participating.
Normally you're right. But this is a problem of not just the guy who threw a temper tantrum. The girl refused to talk to him and yelled at him too. All three have some sort of drama going on outside of D&D. If I'm a player not involved in any of that, I don't care who's the bigger jerk. All three are letting their personal drama affect the game for everyone else. And that's the last thing D&D needs as a brand is for new players to be subject this Jerry Springer stuff for something that's supposed to be fun. Talk about putting a bad first impression out there. I think we've all been at a game table where there was obvious tension going on between two people, and it's no fun to be part of that table.
D&D isn't going to fix their issues, nor should it. Personally, if I were the OP I would simply refuse to game with these two until after any non-gaming issues have been resolved. Doesn't look like that's going to happen any time soon. So they shouldn't be gaming together and punishing all the other players.
Yeah, I know at that table what the guy did was unacceptable. I get that. But you know what else I find unacceptable? A DM talking crap constantly about a player and then is put in a position of power over that player. There is no way the DM can be fair and objective in this situation. And I know this next part is speculation, but I have a strong feeling this is a situation where the DM is using his power in the game to hurt the guy he has no power over outside of the game (bitter because she chose the guy over him). I've seen that waaaaay too many times, and it's toxic as hell.
So the bottom line is they all need to stop playing with each other. I care less about their own drama, and more about the impression they are giving all the other players who have nothing to do with this mess.