The Book of Love by Lynn Weingarten

In the magical sequel to The Secret Sisterhood of Heartbreakers by Lynn Weingarten, Lucy must break the sisterhood's curse before she loses her chance at true love.

Since she joined the Secret Sisterhood of Heartbreakers, Lucy's life has been perfect. Girls want to be her. Boys want to date her. She has access to magic. And her broken heart has completely healed. Her only regret is that her best friend, Tristan, is still hurting from her rejection.

As she searches for a way to heal Tristan's heart, she discovers the truth behind her initiation into the sisterhood—and that her sisters have unimaginable secrets they've been keeping from her. Trapped in a group she no longer trusts, Lucy realizes it just might be better to risk a broken heart than to never fall in love again.