挚恋笨蛋唯爱傻瓜
[zhì liàn bèn dàn wéi ài shă guā]
It combines terms for 'deep lover', 'foolish lover', suggesting someone who deeply loves but may seem foolish in love. The phrase 'only loves fools' adds a layer, perhaps self-deprecatingly admitting one falls only for people who don't treat them well.