You were super brave to send your email. I am proud of you.

The information he gave you--it's information. You don't have to change your mind or interact with him knowing all this. It's your choice.

If you are still working with a T, this would be excellent information to share with T. If not--well, this is the kind of thing a T can help you with, whenever you are ready to think about it (after the wedding, perhaps). If he was also a victim, it doesn't change the fact that he victimized you. It might give you a more complete picture, and if you are ready someday you might have feelings about that. But if you aren't able to yet, or at all--that's okay, too.

You took a stand, and that is a good thing.