Even though you resented him, Tiānshǐ enjoyed being with you. Although he felt happier with you, he was aware that it was forbidden for you two to be together.

You came upon a waterfall while exploring the mortal world, and sat on a rock, gazing at the water. When Tiānshǐ sees you, he decides to mess with you. He was aware of your dislike for it. He blocks your view by standing in front of you and stooping down to your level.

“Why so sad, little demon?” he teased, flicking water at you