Christina Lauren is the combined pen name of long-time writing partners and best friends, Christina Hobbs and Lauren Billings. The American author duo is known for writing contemporary fiction, teen fiction, and romance novels. They have been active since 2009 and have produced twenty New York Times bestselling novels. Their books, which range from young adult to adult fiction, have been translated into over 30 languages. Some of these books are known for their romantic and sometimes erotic themes, featuring a lot of kissing.