You have just experienced a massive emotional shock. In your situation, naturally you may feel panicked, and your mind will start racing and going in circles. You do not have to do anything today or tomorrow, and in fact you MUST NOT do anything yet except try to get more info. The most important thing at this moment is to get yourself centered emotionally. Doing something physical often helps. Go for a walk or a run, or whatever helps you.
What do you already know about OM that could help you find his wife? Do you have his first and last name? Do you know where he lives? Where he works?
Let your W contact you first. If by phone, don't answer. When she contacts, come back here.
