Just to add - They all appear so fucking nice and reasonable all this time - so now you're the problem kicking up after all these years!
You're the one creating the shitstorm!
He has them all well versed on what to say to you. Its all very convenient for your friend to say she always thought you knew, easier to lay the blame on your husband, he probably has instructed them. So you can't blame them for their betrayal also!
As far as they're concerned you should be well over it. Now to the shock, horror they've just realised that you never knew anything about it.
I hate to say this op. but they're all lying to you! the reason no one ever brought it up again was, it was easier for them that way!
Don't fool yourself into thinking they thought you knew all along! When something doesn't make sense its usually a lie!
Your friend is still your friend but it was easier for her and her husband not to get involved - to be honest I can understand their thinking- no one wants to be responsible for stopping a wedding the way they saw it was if Sazdun has decided to marry him we're not getting involved - but in all these years for your friend never to mention it again - doesn't make sense. It was easier for them to forget.
For the record - that OW is not a nice person - she's a conceited two faced snake, who after all of this will still look to maintain the friendship with your husband.
Your husband is now manipulating you with going down financial pressure route on you - If he doesn't get his own way in staying in his job - and maintaining his contact with the OW, its your fault.
I wouldn't have anything to do with any of them! You and your children deserve better. -