1. Honesty – This is the cornerstone of any truly healthy relationship. Now, honesty does not mean saying, "Uh, yeah, that dress really does make you look fat," every chance you get. That's just a recipe for disaster. However, being honest about money, where you spend your time, and your plans for the future are all examples of honesty that a relationship needs to survive and thrive. Once deception starts to take hold in a relationship, it gets easier and easier for partners to lie to each other. What once started out as a little white lie about a bar tab or where you spent your Saturday afternoon can spiral into bigger and bigger lies.