it will end in tears
Definition:  a statement made out of sheer bitterness in order to mock the happiness of others because you are unable to achieve such
Usage:  look at Arnold’s relationship, they look so happy, but one can tell that it will end in tears

SEPEDI
Translation:  go tla fela ka meokgo
Proverb: kgoro e tsenago megobo ka moso e tsena dillo

XITSONGA
Translation:  swi ta hela hi mihloti
Proverb: ku tsaka ngopfu swi hlola mihloti

TSHIVENḒA
Translation:  zwi ḓo fhela nga miṱodzi
Proverb: tshinakaho a tshi yi thambo, tshi no ya thambo ndi mutshinyalo