I like rain very much.
I once told him, "If it rains, it means I love you."
Later, every time it rained, no matter where he was, he would take a picture of the rain for me. Sometimes it's the sky in the rain, sometimes it's the traffic in the rain, sometimes it's the trees in the rain, or it's just a different kind of road sign.
The content of the photo is not important, what is important is that he told me that he loved me too.
Intention: warmth