你说是我们相见恨晚我说为爱你不够勇敢
[nĭ shuō shì wŏ men xiāng jiàn hèn wăn wŏ shuō wéi ài nĭ bù gòu yŏng găn]
You said it's a pity we didn't meet earlier, but I said it was because I wasn't brave enough to love you. This expresses regret and a lack of confidence in pursuing a relationship earlier.