How to maintain a relationship and keep it last forever? How to make your life more easier and happier? It is a study and we should learn it during our whole life. Here are the important factors in maintaining a relationship. Equality is one of the important conditions for the maintenance of intimate relationships. According to the equity theory, people are most satisfied with intimate relationships under the premise of proportional justice, that is, paying should be proportional to their income. In love and marriage, long-term fairness is more important. Most happy couples don’t care about how much they pay, and they harvest a few, but pursue a rough equality,…