Hook:    "Mrs. Schultz, your husband is having trouble providing a sample. Would you mind going in to help him?"    The doctor had just finished the procedure, and before I could gather myself, a nurse was already leading me toward the collection room.    She gave me a small, almost amused smile. "He turned down all the videos we offer. Said they don't do anything for him. He claims he can only respond to the woman he's actually in love with, so we'll need you to step in."    I forced a polite smile and pushed the door open.    Tristan was standing there, completely absorbed in his phone. His breathing was uneven, his focus locked on the screen like the rest of the world had disappeared.    It was a photo of my sister.    He didn't even notice me at first. His voice was low, rough, almost reverent as he said her name.    "Ava…"    Eight years of marriage, and this was the woman he truly wanted.    The thought made my stomach twist, but I kept my face steady. I walked over, reached out, and took the phone straight out of his hand.