Some people say that love doesn't need to be sweet, it needs a long stream of water, and a long stream of love is the best. What does this sentence mean?

A long stream of fine water is the kind that keeps a certain amount, but will not stagnate or stop flowing.

Just like you spend money, buying a lot of vegetables at a time costs a lot of money. If it's not bad, throw it away. However, if you buy a little every day, you will spend less money, and you will have fresh vegetables to eat every day. Vegetables will continue every day, and if you have little money every day, you will have money to buy them for a long time.

Just like a stream, the water keeps flowing. Instead of pouring the water from the source, the water finally dried up. So is love. Love for a long time, and keep it fresh for a long time, instead of starting to love to death. If you are tired of it, you won't love it and you won't feel anything.

In short, a long stream of water is a preservative for long-term love.