不经历人渣哪儿穿得起婚纱
[bù jīng lì rén zhā nă ér chuān dé qĭ hūn shā]
Where would you find a bridal gown without having met scoundrels first? It's quite sarcastic and self-mocking - seemingly acknowledging one cannot directly enter the realm of marriage happiness without passing through hardships, betrayal, disappointments, particularly regarding poor relationships before true love.