A few years ago, I lost one of my best friends. C* and I met in grad school and we were inseparable. When my ex cheated on me and I broke it off with him, she picked me up off the floor. When she and her boyfriend ended things, she was inconsolable. She moved in with me until she found her own place.  I made sure she ate and was there for her the same way she was for me during my heartbreak. C was by my side as a bridesmaid when I got married. She was the gracious host of my baby shower. Then my pregnancy, though closely monitored…