equity one key to relationship endurance is equity, which…
Page 138 equity one key to relationship endurance is equity, which occurs when friends or lovers perceive that they receive and proportion to what they give. When two people share their time and possessions, when they give and receive support equal measure, and will they carry equally bought each other, their prospects for long-term friendship or love are bright .
— from Friends, Community & Society (Relationships/Community/Society)
In the book
The first: nearly every broken relationship can be traced back to a broken agreement — so guard your word. The second is equity — relationships endure when both people feel they are receiving roughly in proportion to what they give; lopsided ledgers eventually collapse. The third is self-disclosure — closeness grows through a kind of dance, where one person reveals a little, the other reciprocates, the first reveals a little more, and step by step you move from small talk to the things that actually matter. — Friends, Community & Society (Relationships/Community/Society)