"I don't want him. I can't do this." That's what my ex said after our son was born, leaving me a single dad. These days, my world revolves around my son and my bar. Until her—my ex's sister—steps into our lives. She's a woman I want but can never have. Even though I try to push her away, my son falls in love with her. Lines become blurred. Even though it's wrong, desire doesn't fade away.