酒不醉人人自醉情不伤人人自伤
[jiŭ bù zuì rén rén zì zuì qíng bù shāng rén rén zì shāng]
Wine Does Not Make People Drunk; They Get Drunk On Their Own. Love Does Not Harm People, but People Harm Themselves for It. The phrase implies people choose their emotional state despite external influences like alcohol or love.