I am reading Eat, Love, Pray by Elizabeth Gilbert. It's a great book, but there is this one passage about her struggling to let go of an old love, David, that struck a chord within me. At some point, I have traveled this very road and the clarity that this passage gave me left me speechless. I hope that it does the same for you.
As background Richard is just her friend and he calls her Groceries (I don't remember when right now). David is the lost love.