The divorce papers were still crisp, the ink barely dry, when I saw Mark in the parking lot of the Shop-Rite. A month ago, he had walked out of our cramped two-bedroom apartment, claiming he “needed to find himself” and that our life together was “suffocating his potential.” I was heartbroken. He had been a cashier at a local hardware store for six years; I was a school teacher. We weren’t rich, but I thought we were happy.