Good morning MoreLegs. I hope you had a decent night's sleep.
I also love @Onthedunes' phrase "A Banquet of Consequences,". Maybe you could work that into the title of thread number 3?
Dear MoreLegs please don't be so hard on yourself. You really aren't stupid, naive or gullible. It sounds as though H is a very skilled, very accomplished liar with the ability to charm anyone he pleases.
It is no reflection on you that you did not detect the overweening selfishness and lack of a moral compass sooner because for a long time he liked telling himself he was a successful man with a loving wife and children.
Then he got older, the children grew up and suddenly he found he was an ageing grandfather not in the best health, with an erectile dysfunction and children who were largely independent teenagers or adults. He didn't care for that image so he manufactured this ridiculous fantasy of being young, care-free and single, and hotly pursued by a woman half his age. It is absurd and selfish and a monstrous way to treat all of you.
But I am sure he only sees you all in relation to himself, not as individuals in your own right.
So one day his personal Banquet of Consequences is going to be a huge surprise and he will probably have the cheek to feel very hard done by.
Oh and by the way OW is a totally rubbish mother. I hope her DC have a decent father because they were definitely short-changed with one parent.
Lovely that you are making the effort to stay in touch with FIL and SIL. I am sure it is very hard and there is a great temptation to let things simply drift. But you have done nothing wrong. Why should H be allowed to rob you of other relationships?
Keeping going as best you can through the hard times is something to be very proud of, and you do it very well. Keep on going, lovely. Keep on being amazing. 