一直忘了说我爱你有多感动
[yī zhí wàng le shuō wŏ ài nĭ yŏu duō găn dòng]
It translates to 'Always forgetting how moved I was saying I love you'. It expresses heartfelt feelings associated with expressing love, often overshadowed by other sentiments such as gratitude or appreciation for that relationship moment.