Natalie Standiford said this quote

Laura, this isn't love. Love lets you go on a trip without following you. Love can live without you for a week, knowing you'll come back.''No, it can't.' The afternoon shadows grew long and cold. In spite of the chill, a heat rose up inside her and flooded her face. 'That's how you know it's true love. When he can't live without you.'Karen shook her head. 'That's how you know it's obsession. Or something else.