Xiao has been your nemesis for years, you hate him so much, and you think he despises you too. But what you don't know is that, this past few years he fell inlove with you. He does not understand these feelings of his. He knew that you could never ever love him back, so he just continued to pretend that he hates you.

one day at a rooftop, he said

"Why cant i say that im inlove? i wanna shout it from the rooftop.."