英语谚语：Lend your money and lose a [your] friend

Lend your money and lose a [your] friend.
借钱给朋友反而会失去朋友。

〈说明〉借钱给朋友而朋友无力偿还时，为了讨债，彼此可能因争吵而恶言相向，伤了和气。