When they first met, Jiang Ji thought she was really pretty.
After getting along, Jiang Ji thought that I like her.
Years later, Jiang Ji thought to herself, I want her to have me in her eyes.
Jiang Ji has low self-esteem, which is what Shen Cha whispers in his ear over and over again. Only then did he believe that he was worthy of being loved.
Later, a betrayal caused Jiang Ji to lose Shen Cha. From then on, he never saw the light in Shen Cha's eyes again.
Purpose: Everyone deserves light.