桃花开出三世缘
[táo huā kāi chū sān shì yuán]
Literally meaning 'peach blossoms blooming in three-life destiny'. Peach blossoms represent romantic encounters or love affairs in Chinese traditional context. So the whole saying conveys that current meeting is the destined result over past lives, current life, and future lives - essentially representing profound, destined, enduring relationships that span many incarnations or generations.