I went through a very similar time with my wife. Right around the 10-year mark too (and right after our last son was born). Five years later our marriage was stronger and the sex better than it had ever been. I’m still not quite sure how we found our way back to each other but I know it had a lot to do with the stress of little ones being off to school. We had time for each other once again. I suspect you’ll find your way too. Maybe that hug coupon and an evening reading this very essay to him?