I was doing CE t'other day and there was one guy in the fireteam who was pretty quiet the whole time. Then his girlfriend came over to him saying to "get the hell off that f**king game". He just said he can't right now, he just needs to finish this last bit. Argument ensued. Couldn't hear the details much. Heard a massive slap and her shouting "YOU'RE SUCH A F**KING AS*HOLE SOMETIMES". Player disconnected.