In several occasions, Little Dragon Girl willingly give YG to some other girl. For example, in Xiang Yang, she let Guo Fu have him. Later in Passionless Village, she was willing to let the village master's daughter have him.
In retrospect, it seems that Little Dragon Girl's love for YG was based on a lie any way. She feel deep for him after the night she under the stars where the nasty was done to her.
Maybe after realizing it was not YG, she no longer loves YG as much. Any thoughts?