Fireproof (Paperback) by Eric Wilson, Alex Kendrick, Stephen Kendrick

Inside burning buildings, Captain Caleb Holt lives by the firefighter's adage:  Never leave your partner.

Yet at home, in the cooling embers of his marriage, he lives by his own rules.

Growing up, his wife Catherine always dreamed of marrying a loving, brave firefighter . . . just like her father.  Now, after seven years of marriage, she wonders when she stopped being "good enough."  Countless arguments and anger have them wanting to move on to something with more sparks. 

As they prepare for divorce, Caleb's father challenges him to commit to a 40-day experiment:  "The Love Dare."  Wondering if it's even worth the effort, Caleb agrees, for his father's sake more than for his marriage.

Surprised by what he discovers about the meaning of love, Caleb realizes that his wife and marriage are worth fighting for.  His job is to rescue others.  Now Captain Holt is ready to face his toughest job      ever . . . rescuing his wife's heart.