Tied: Book One, The Reign Series:

The moment Reagan Langley signed her divorce papers, she felt a wave of relief followed by a sickening realization. Her marriage didn't fulfill any of her needs. In celebration of her new relationships status, Reagan is gifted a salacious romance novel. The more spicy sex scenes she enjoys the deeper her curiosity grows. The impulse to understand her new cravings leads her to Reign, a local sex club, and into the capable hands of Caleb Dunn. Their chemistry is instantaneous, but so is Caleb...