These 20 Unbelievably Sexy Books Are Too Hot and Steamy to Miss

"Heartbreaker," the second Hell's Belles novel by Sarah MacLean, definitely brings the steam along with a heartstopping romance. Adelaide, a skillful thief who helps unwilling brides avoid marriages, hides in plain sight as high society's most overlooked wallflower. She gets entangled with Henry, a duke with secrets, and when they're stuck teaming up to stop a wedding, things get steamier than either expected.