Constance wanted to kill this guy trying to kill her. It only seemed right. But as a woman in white she could only kill the unfaithful. As if reading her mind, he said, "You can't kill me. I'm not unfaithful. I never have been."
Constance had never met a man who wasn't unfaithful at some point. Men were scum. "You will be," she whispered and kissed him. With that kiss she saw his future and how right she was. Oh, he would never be unfaithful to a girl, but even Constance recognized that a betrayal of a brother was so much worse.