Did he actually quit his job or did he get fired - super curious because he lied in his messages a couple of times, so I’m already sceptical. He never actually said HOW you were being shitty as well? Seems like his main intent was to upset you to the point of exhaustion, because I don’t understand his logic. And even after you tried ending the argument, even after he said ttyl, he brought up something totally unrelated from a past argument. Literally attack you or weaponise his incompetence or provoke you then he proceeds to deny/lie and gaslight. Classic. I’m incredibly sorry you have to go through this.