Adapt a Taiwanese romance that you like very much, try to imitate it, and add your own personal YY.
"You are the stinky student union president who made it clear that you were always against me and loved to find fault with me."
"You're still like this, you don't consider other people's feelings at all."
"I love you."
"Since when?"
"Probably when I danced the first tango with you..."