If you're thinking about improving your relationship by the book – that is, using a self-help guide to improve your love life, there are a few tried-and-true choices and some books that are timely and smart. Here are a few choices that can heat things up and even help heal a broken heart to help you move on. Let's start with the sexy stuff -- Mating in Captivity by Esther Perel, a sex and marriage and family therapist, seeks to help long-term couples, heterosexual and gay, with kids and without, of all ages to rediscover the passion and intimacy in their relationships. She reveals what's missing in relationships outside the bedroom when what happens in bed suffers. Her steamy tips are sure to help any relationship that needs to regain that spark. Love in the Time of Algorithms is a contemporary take on how to meet people online. Author Dan Slater investigates how online dating and the numerous online dating sites have affected how we couple up. He examines how it all began in 1965 when called "computer dating" to today's multi-million-dollar industry in which one size does not fit all when it comes to dating sites.

One of the top-selling books in Amazon's Relationships genre, Getting the Love You Want: A Guide for Couples, is a classic tome written by Harville Hendrix, Ph.D., and was originally published in 1988, with a recent update. Hendrix uses his thorough psychology background to lay out solutions for conflict resolution and how to reignite passion and love. He reveals the three stages of intimate relationships and the secrets for moving on to the next phases. Money Harmony: A Road Map for Individuals and Couples tackles the number-one issue couples fight about – money. Learn your style and your mate's style of money management and how to communicate differences without arguing – or going bankrupt! Finally, a book that addresses the end of a relationship:  It's Called a Breakup Because It's Broken. From the author of He's Just Not That Into You, Greg Behrendt seeks to teach readers how to make a breakup into a "breakover." The book is full of humor and timely advice for the brokenhearted, like why you shouldn't call him and how to avoid breakup pitfalls. Funny stuff for someone who probably desperately needs a laugh!