Mermaid,
If I were close to you, I've give you a huge hug. What an emotional day that you have had. I'm so sorry that things were so out of character for the funeral.
What a moron! What was he thinking by bringing that woman to his father's funeral knowing you and the girls would be there? He's your typical mlcer, not caring what others think just as long as he's got that person there for support. You know, I think I would step back a bit when he comes seeking support from you. I know you want to be there for him, but I think it's time for a little distancing now.
I don't blame you at all for flashing your rings. This woman and affair will not last. I'm glad you let her know that you are standing for your marriage. It will be interesting to see if he raises the issue w/you later on.
Now, you need to regroup and let him flounder in the wind. You've made your opinion perfectly clear. Mermaid, step back and wait patiently.
Be kind to yourself this evening. It's been a very "trying" day to say the least. Is there anything we can do for you?
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.