One of the foundational elements of a positive and long-lasting relationship, is for each partner to treat the other in the manner in which they wish to be treated. A book by Gary Chapman, published in 1992, is still relevant today. But knowing what your partner favors as the ideal expression of your care for him or her, is key to that positive relationship. The author called these an individual's "love language". It is part of knowing one another deeply and considering the other.