傻瓜这爱要珍惜笨蛋这情要守护
[shă guā zhè ài yào zhēn xī bèn dàn zhè qíng yào shŏu hù]
A reminder to value the pure, albeit silly ('fool') love and cherish and protect this sincere affection, no matter what, urging each other to be protective and appreciative of the love they share.