Just adding a comment to add what others have shared: completely ignore the vitriol. Either they need validation for staying in loveless marriages or they never grew up to understand every relationship is unique, just as we all are. I’m positive your story we’ll help many who feel like they are drowning and don’t know where to begin. Honesty and clear communication are keys to any happy marriage, you did just that. I wish you both happiness, and hope she’s found a special someone as you have.
Again—ignore the hate. It’s purposeless.