He stands there and takes it all. And frankly he wishes she would hit him. He deserves it, but also knew it was her right to show her anger however she wanted. Including refusing an apology.

"You are completely right. In every possible way. And I know you have no obligation to accept an apology. Or care that I'm giving it. Which doesn't change the fact that I owe you probably a dozen. I was unfair to you and unkind. It stems from my own issues and was cruel and just completely wrong after you were being nice and friendly. I probably deserve to have my ass kicked."

And he knows no level of contrition means she would ever have to take his apology or his presence.

"I apologize. Which is worthless after being shitty. But you deserved an apology that was more than a hastily shouted 'I'm sorry.' There is no way I have a right to comment on your life, your actions, who you socialize with, or have feelings or even just relations with. My comments were a complete dick move and lacked any consideration for another person."