On one hand, David knew what the problem was. He felt guilty him self. But on the other hand, what was the big deal? It was over and done with. There wasn't any taking it back. Life happened. He could get over it if he had to. And he would. Quickly, but only if he wasn't being made to feel guilty about what they'd done together.
"Yeah. Well. Whatever. Shit happens." he replied, sympathetic as always.