就這麽一個莪不珍惜拉倒
[jiù zhè mó yī gè é bù zhēn xī lā dăo]
This username, roughly translating to 'just give up if he does not cherish you,' carries the same message as '别再为他作践自己.' It means one should give up and move on from a person who doesn't appreciate or value them.