If you find that you can't get enough of good sex with your partner at some times but hate the thought of it later, you may be at the mercy of a set of mental factors that turn on the green light for short intervals, while staying on red for long spells. In the green light time zones you see each other as desirable and comforting, but during the red light time periods you perceive each other as robots who need to do their duty and kill off intimacy by making demands and comparisons that are impossible to overcome. Learn two ways you can keep the green light on for longer and on a lasting basis for your constant enjoyment of physical intimacy.