I can't even imagine that. I'm still POed that he brought gifts into the house that were doubtless wrapped by his OW2. At the end of the day, while you have every right to be furious, what does you saying anything accomplish?
We all know you want to reconcile your marriage. For that to happen, she has to decide that she doesn't want the other men. For that to happen, you have to not do things that will push them together or bond over, or make her rail against you for. At the end of the day, it is just a dress, or whatever. I would be grateful that the money flow is that way. I'm quite certain that my H is paying for everything with his single mom with 3 kids.
Focus on the big picture and let the petty annoyances go. Focus on you, detaching, being mysterious, getting a life. Be firm in your boundaries and live a life you are proud of and that sets a good example for your kids. The part you can't control is going to happen however it happens.
