Reasons I need to stop fantasizing about Linnea: 1. She's too young for me. 2. She's my daughter's nanny. I could stop there, couldn't I? I'm already a clich?. The single dad who's hot for the nanny. But it gets worse. 3. She's my sister-in-law. My wife died when our daughter was a baby, and Linnea was just a quiet teenager. I barely knew her. When my in-laws insist she move to Seattle to be my live-in nanny-after a string of caregivers who didn't...