it is just a day. Just like V day. birthdays etc..
Just by stating this:

Today is my anniversary... 20 years... guess we didnt make it

your putting focus on him again.

You need to wake up everyday and live in the moment. Why would you even think about talking R with him? so you get deflated and put pressure on him.

On my wedding anniversary I did not acknowledge it. No card. No nothing for her. She actually was nice to me for weeks after that

It is just a day. You really need to change your attitude.

Google law of attractions. You seek misery you will be miserable. You seek happiness you will be happy. Misery loves company comes from somewhere.

We had a a relative female that thrived off of me and my W's problems. It was pretty sick. All of sudden her M was going bad. Misery loves company. Be happy. You can do this.

I don't know how else to drill into your melon how important it is to take focus off H. I wonder if your life depended on it if you would. Im guessing you might die