PVE, wave-mode. We were only 3 players. Guy number 2 said he had a foolproof plan how to win this. Guy number 3 killed guy number 2 for fun. Guy number 2 respawned. THEN the game started. Guy number 2 immediately abandoned us with his jump-pack and sat out the game while clinging to the ceiling. I accused him of leeching XP and he said, he was letting us die to teach us a lesson. Guy number 3 and me had no chance and died swiftly. NEXT GAME, I again get queued with guy number 2. The PVE-game takes forever to load. (Maybe some kind of bug.) He complains that I didn't take his side in the earlier game. He accuses me of grieving. I repeat that it wasn't me who killed him and tell him to grow up. He keeps on complaining how I didn't take his side and how I'm the griefer. I repeat that I never did him any harm, so quit it. Then he starts complaining that it was ME who killed him. I lose my cool and respond with obscenities. His response? "Haha! You used swear-words! You have lost the argument! I win!" I quit.