So the guy confirmed that they had an affair? Is this guy trustworthy? Would he have reason to lie to you about what happened with him and your W. Write down everything and then start figuring out what you want to say. I think you should work on this and then let it all be for the weekend. Go out and have fun and try to forget about all of this. Then look at it with fresh eyes on Monday and I bet you take out over half of what you have and reword the rest.
