原谅我囚禁你于心底
[yuán liàng wŏ qiú jìn nĭ yú xīn dĭ]
'Forgive me for imprisoning you in my heart' is an expression of deep affection, but also conveys a hint of regret, meaning one treasures someone so much that they want them forever within their heart, despite knowing it may be wrong or painful.