No, Michael didn't talk about it. Ever, actually, after that conversation with Ella - not even to Terry or Aidan or Stephen. (That would've been the order he'd have talked about it, if he ever had.) He'd buried it and tried to forget it, but it drove his behavior almost completely. It was strange to be so consumed by something that you couldn't bring yourself to tell anyone, but that was Michael. He had no recourse, either. Bad things had happened because of him, and he had no way to fix it. It would be hard for anyone to like themselves if they went through life with that belief, and he was no exception.
But there were saving graces. Michael had spent his eleven years since trying to make sure everyone else around him was happy. He had to. He'd made other people so miserable, and he didn't want to be that person ever again. So now he was the one you could depend on to bend over backwards to make a friend feel better after a hard breakup, for instance.
When Terry mentioned that Ben would want to look after Daniel, Michael grinned. "Good, he'll need that. Not that he's prone to be babied or anything. Daniel has a soft heart," he answered. "He gets his feelings hurt easily, and I worry about him going away to school and having some of the others pick on him, you know?" Michael asked. He didn't want Daniel to be that kid.
"They're a horrible mess. And that's a deal," he agreed. The less time Michael had to spend around the mud, the better in his opinion. Plus - and he'd dare not say this to Terry - Michael would prefer to keep his best friend away from his appliances!