She is proving to be a good wife but still communicating with her Ex-Fiancé who is also married. She saved his numbers with another names and also added him as a friend on Facebook. The Husband discovered but yet to confront her because he is confused. If you were the one, what would you do?

Let her know you know exactly what she is doing. But she should think well if jeopardizing her family and marriage is worth it. If she thinks it is worth it, she can go ahead. When next you catch her sneaking around to do all this, then you will react how you think is appropriate considering the circumstances.