轻描淡写似水流年浅唱低吟说我爱你
[qīng miáo dàn xiĕ sì shuĭ liú nián qiăn chàng dī yín shuō wŏ ài nĭ]
Suggests conveying one's love with understatement and simplicity, letting it naturally flow like water passing over the years while quietly professing their emotions.