你真是一鸣惊人一说话就提分手
[nĭ zhēn shì yī míng jīng rén yī shuō huà jiù tí fēn shŏu]
'You Truly Surprise Me by Talking About Breakup So Suddenly' expresses surprise at a loved one's unexpected mention of ending the relationship. It could imply hurt or shock over such abrupt discussions of separation.