We can simply define cool off as a phase or state of feeling when one looses the intensity of love to somebody. The love’s intensity loss may be sudden or gradual due to an unexpected disheartening event or character, discovery of something very discouraging, having stronger feelings to somebody else, etc.
While a cool off may sound something “nega†in nature, one can find real benefits from it if we look at it the other way around and carry it out maturely.