她让你红了眼眶你却还笑着原谅
[tā ràng nĭ hóng le yăn kuàng nĭ què hái xiào zhe yuán liàng]
This means 'She made your eyes turn red (by crying) yet you're still smiling and forgiving'. Even though someone has caused pain and maybe hurt, tears welling up in her partner's eyes, they choose to overlook the faults and forgive her anyway.