If we went into a relationship choosing to love one another rather than based on feelings, we could do away with some of the mistakes that we make. when we choose to love someone, we go into the relationship knowing this person isn't perfect and they will eventually get on our nerves in someway. when we go into relationships, it often starts out as romantic love.
Eventually, Romantic love fades. NOow, we become faced with a choice to keep loving someone. so, if we start of saying, "hey i kniw you're not perfect and eventually you're gonna get on my nerves, but i choose to love you anyway", you have prepared your heart and mind for the hard times. We need more volitional and unconditional love. It's what God has for us.