毕竟他喜欢公主而我姓王
[bì jìng tā xĭ huān gōng zhŭ ér wŏ xìng wáng]
After All He Likes Princesses and I Happen to Be Wang (which sounds like 'princess'). The owner of this nickname tries to link the fact they share part of a title 'Wang' with the idea that a person prefers royalty, indicating humorously a play on words or self-mockery.