I am getting better at holding my tongue, at least when I first feel the impulse to say something. I wait until I have calmed down and then decide if I should talk about it or not.
I don't necessarily think OW will back off for the right reasons, but I KNOW it will cause a lot of problems for them which could lead to her getting fed up and telling H to get lost. They are still in the early phase of a R, if she knew the truth, she may decide to get out while she can. And if she decides to stay she will start acting desperate and controlling, which will cause H to leave her.
They are already fighting about our living situation, and she doesn't even know the half of it. I am sure she doesn't know that my H's mom wants to spit in her face. His mom will always live with my H, so OW is in for a great home life if they stay together...
I was so right about him living in fantasy land with her, they just eat and party all the time, money/budgets are not considered, his family is not considered, his obligations are not considered. It's just fun, fun, fun. And there is no conflict (other than me) cause she has no clue what's going on in the real world. He is keeping everything from her. Total denial.....