Outwardly, I was thriving. It has been three months since my boyfriend, Jason, left me. Everyone praised me for the way I was handling the breakup. I was doing better than ever at work, even earning a promotion. And I was in the best shape of my life, my twice-a-day workouts tightening my stomach, toning my already shapely legs, and shedding any of the typical weight one gains when they’re in a comfortable, long-term rela...