What does it mean to be in love with rain today?

It symbolizes the ups and downs of love.

There is urgency and delay, which symbolizes the ups and downs of love and smooth sailing. It won't rain all the time, but it will. I mean, no one will love you forever, but someone will always love you.

In the pursuit of love, two people will encounter all kinds of difficulties and need two people to work together to tide over the difficulties. Rain may be a metaphor for difficulty. Love needs the efforts of both sides, the need to finally come together, and the need for mutual tolerance and care. When the two sides form a tacit understanding, love will be complete.