Why did Lan Forgot the Machine bite Wei Wuxian's lips?

Lan Forgot Machine Bites Wei Wuxian because Wei Wuxian says Lan Forgot Machine likes cotton. Before this, Wei Wuxian also deliberately forgot the plane and said that he didn't like men. But at that time, Lan Forgot Machine had fallen in love with Wei Wuxian. Blue forget machine see Wei Wuxian that I know everything, but still misunderstood his own mind. He bit Wei Wuxian in a rage.

These two characters are both from The Magician, and they are the original fantasy novel of Mo Xiang and Tong Chou, and the main lovers work together to solve puzzles. 20 15 10 3 1 serialized in jinjiang literature city. The first edition ended on March 20 16/(text), and the online edition officially ended on September 7, 20 1 6.