Re: Ex
^Good for you.
As for his wife, she seems insecure for a reason.. who knows. Maybe she thinks you're better than her, after all, her husband did choose you first. And even after kids if she's giving you such looks, imagine what she must be like.
If you say ANYTHING to him at this point, he's going to think you still have feelings for him or a place for him in your heart/life. Some men are like that, they get all flattered when they hear these things. Why do you even want to give him the satisfaction that you're still hurt or thinking about him? Just let it be.