小作怡情，大作伤身
xiǎo zuō yí qíng , dà zuō shāng shēn
an occasional display of histrionics can add a playful element to a relationship, but overdoing it can lead to a breakup (admonishment derived from the saying 小酌怡情，大酌傷身|小酌怡情，大酌伤身[xiao3 zhuo2 yi2 qing2 , da4 zhuo2 shang1 shen1])