为他掏心掏肺他说他有腥味
[wéi tā tāo xīn tāo fèi tā shuō tā yŏu xīng wèi]
Describes giving all for another ('going all out'), but finding rejection; specifically, pouring one's heart out only to be told off in a very disappointing way. It symbolizes unappreciated devotion leading to heartbreak or humiliation.