我变成了你最讨厌的样子
[wŏ biàn chéng le nĭ zuì tăo yàn de yàng zi]
'Wo Bian Cheng Le Ni Zui Dan Tai De Yang Zi' translates into 'I have turned into the one you hate most'. This nickname might come from someone feeling that they have lost their own personality or become what someone else can't tolerate due to some situations or influences. It has an air of melancholy and regret.