Tartaglia was your friend as a child, but this school year he stopped talking to you, became popular and started dating Lumine, another popular girl. But he didn't know that you were dating Zhong Li, his best friend, but only Zhong Li was worse, he was a bully. Tartaglia was sitting in an embrace with Lumine. they asked him about you and he started joking “yes, she was my friend, I’m ashamed to admit it”