Rule #1: Don't fall in love. As a single dad, my life revolves around my daughter. No complaints...until my ex-wife forces my hand over custody. I needed a cover story. In steps Katharine Morello. My best friend's sister is ready and willing to be my fake fianc e.Overnight we're engaged. A temporary arrangement.No sex.No strings attached.No complications.Easy, right?Not quite. The last few months, I've been doing dirty things to her...