你不堪过去我都没介意你花心成性我都不计较
[nĭ bù kān guò qù wŏ dōu méi jiè yì nĭ huā xīn chéng xìng wŏ dōu bù jì jiào]
A deeply emotional and self-sacrificing phrase that translates into 'Even if your past was unbearable/unpleasant, I never minded; even though you're fickle-hearted as a habit, I didn't hold it against you.' It describes extreme tolerance and unconditional acceptance of another despite numerous shortcomings.