我姓罗却只为你而堕落
[wŏ xìng luó què zhĭ wéi nĭ ér duò luò]
'My surname is Luo, but I fall only because of you'. Here 'fall' doesn't mean physical descent but rather becoming addicted or infatuated over the other person, implying a romantic obsession for one person despite being unrelated. Note here Luo is a Chinese family name, often used metaphorically to describe someone who can get into trouble just because of their nature or another.