This proverb advises against having a superficial and inconsistent approach to love and friendship. Just as a door is frequently pushed from one side to the other without true constancy, one should not show affection in a way that is unstable and capricious. In other words, love and friendship should be genuine and steady, not subject to the whims of the moment. An equivalent in English would be: ‘Do not be fickle in your affections.’