原谅我年少轻狂却以你为氧
[yuán liàng wŏ nián shăo qīng kuáng què yĭ nĭ wéi yăng]
Means 'forgive my youthful recklessness, but you were my oxygen'. Expresses regret and confession mixed with deep reliance on someone during the youthful years, signifying growth and dependence on another person.