滥情男生菇凉爱花心女生先森恋
[làn qíng nán shēng gū liáng ài huā xīn nǚ shēng xiān sēn liàn]
It humorously translates to 'a promiscuous boy loves a capricious girl while Mr. (先森) falls for fickle girls.' The mix of terms (especially 先森 being a playful phonetic approximation of 'Mr.') makes it quirky and slightly chaotic yet interestingly realistic.