愿时光厚待我爱人
[yuàn shí guāng hòu dài wŏ ài rén]
It means 'I hope time treats my loved one well.' '愿' (hope), '时光' (time) is anthropomorphized in this phrase, asking for gentler treatment towards the person’s significant other, wishing their loved one has fewer sorrows or hardships over time, implying that love should transcend all difficulties and endure.