My boyfriend of three years was in my sister's bed when I went to return his apartment key. I asked him why, and he looked past me at the woman who had shared my childhood bedroom, my secrets, and every holiday table. Years later, after I married his younger brother, Julian showed up at our anniversary dinner with the apology I had once begged him to give me. He said he still loved me. My husband asked what I wanted to do. The answer should have been easy. But the family Julian and I had once planned to build still had a hold on me, and this time I had to decide whether his regret was worth risking the life I had chosen.