The lessons from the rain

I said there was no rain damage.
I told you to be careful with the rain.
The returned answer says that there is damage.

There is damage from the rain that soaked my heart
So I always say thank you.
I knew then.
what's the story

But now that I think about it, I really don't know.
What does it mean to wet your heart
You don't know, you pretend you don't know
eh i don't know