"Good as water" refers to Laozi: "Good as water, water is good for everything." In other words, the highest realm of good deeds, like the nature of water, does not dispute fame and fortune and is favored by all things.

Water has the virtue of nourishing everything, so that everything can benefit from it, and it does not conflict with everything, so the greatest goodness in the world is like water.

I hope my love can reach the realm of water. Of course, the specific meaning should be combined with the context in which this sentence is located.