Fireproof.

Fireproof is the story of a firefighter, Captain Caleb Holt, who lives by the old firefighter's adage: Never leave your partner behind. But, after seven years of marriage to his wife Catherine, their own relationship is failing. Neither one understands the pressures the other faces.[6] Caleb claims that Catherine is too sensitive and "doesn't show me respect." Whereas she tells her hospital co-workers that he is "so insensitive" and that "he doesn't listen to me" and "doesn't understand my needs." Caleb's addiction to Internet pornography is what sets the marriage over the edge, however.[7] As they prepare to file for divorce, Caleb's father challenges his son to commit to a 40-day test called "The Love Dare." Caleb starts it, but more for his father's sake than for his marriage.

When Caleb discovers the book’s daily challenges are tied into his parents' newfound faith, his already limited interest is further dampened.

Even though he wants to stay true to his promise, Caleb becomes frustrated time and time again. He finally asks his father, "How am I supposed to show love to somebody who constantly rejects me?" When his father tells him that this is the love God shows to people, Caleb makes a life-changing commitment to love God. And, with God's help, he begins to understand what it means to truly love his wife. But, he is unsure if it's too late to "fireproof" his marriage