薄情寡义只宠你沾花惹草只爱你
[bó qíng guă yì zhĭ chŏng nĭ zhān huā rĕ căo zhĭ ài nĭ]
Roughly translating to 'Heartless and disloyal to everyone except for pampering only you' followed by ' womanizing and flirting yet loving only you'. Both suggest someone who acknowledges their bad qualities, such as having a callous personality or promiscuous behaviors, yet insists on being faithful only to one person in love.