Change your mindset. Determine that you're not merely going to "cope" with it (although that is important), but you're going to ATTACK it. What is your PLAN -- legal, financial, emotional, spiritual, health?
A great place to start would be to lay out some healthy personal boundaries. "No texting OW from inside of our marital home" (and CERTAINLY not in FRONT of you!!) would be a great place to start.
What are your current financial arrangements? Do you both work?
Have you told him that you're not willing to live in an open marriage?
