She was guilt tripping him? She was seriously going to stand there after just dropping these bombs on him and guilt trip him? Well why not twist the knife and pour some salt in the wounds?
He wanted to shout at her, get mean. Fight dirty and say things he knew he'd regret later, but he couldn't let himself do that. Sure it would have felt good to vent, but he'd trusted her with his heart and...and suddenly he was relating in the slightest way with Dickhead Mayor Heart. Geezus!
He ran a hand over his face then shook his head as he turned away from her. Looking at her, at those tears on her face made him want to do everything she had been expecting of him. Wrap her up in his arms and tell her everything would be okay, but he couldn't do that. That would be the easy thing to do, and she had to know that there were consequences for actions, or lack thereof.
Without saying another word he slowly sat down at his terminal and went back to work. He was shutting down. Things hurt, and he wouldn't be able to think about it for a while.