I am afraid that there is going to be more turmoil around you for a while. Brace yourself and lean on your true friends.
I'm not sure about this friend of H's - he seems to like to be the one with the news. It's really important right now that you surround yourself with people who have your best interest at heart and who understand you and what you need for support. I see no point in the things that this guy said to you or why he would want to stir up the drama.
I understand how you feel if H is lying - but, if he is, it's not too surprising given the huge blow-up when the A was first exposed to the light of day. The fact that his workplace is involved makes it even more likely that he would keep hiding. You probably need to take most things he says at this stage with healthy skepticism. Trust but verify? Or, don't even bother to verify unless it is about your financial issues. Just wait and see what happens - forget about the words and see what the actions tell you.
You know - when I think of your sitch, I think of the kind of person that this OW seems to be. I contrast her walking out on her disabled H versus you trying so hard to be true to your vows and loving your H even when it hurts so much. These are the two extremes that he seems to be choosing between. (Unless he really was just having a little fling that stopped being fun when they got caught). Honestly - if he does have a choice to make and he chooses a woman like her, then he deserves what he gets. It's just so much harder for you that your innocent children will be affected by this choice and that you will still have to co-parent with this man no matter what else happens.
Does your yoga help you with managing your thinking and emotions or do you do it more for physical exercise than for meditation?
Hang in there. Here's a prescription - Find a comedy to watch or do something else that will give you a chance to laugh.
me: 47 H: 48 he has 2 grown sons M 1995(my 1st, his 3rd) hit iceberg 6/07 S 9/26/07 before now