Men Are from Mars, Women Are from Venus is about understanding the differences between men and women, so we can communicate better with our partner. John Gray says that in a relationship, men primarily need trust, acceptance and appreciation, while women need caring, understanding, and emotional validation
The 5 Love Languages is about helping you connect better in your relationship or marriage. Gary Chapman says love is not one-size-fits-all. People are very different in what makes them feel loved. The 5 "love languages" are: words, time, gifts, service, and touch.