婚纱你却不能为我穿上
[hūn shā nĭ què bù néng wéi wŏ chuān shàng]
Here the person speaks of disappointment over unfulfilled dreams of marriage - specifically referring to not being able to wear the wedding gown, often a deeply desired tradition for brides especially in cultures influenced by western customs including China. The sentiment is one of longing, loss, and perhaps heartache or regret.