amici amici e poi ti rubano la bici

Literally: Friends, friends, and then they steal your bike

Italian saying for when a friend lowkey disappoints you or turns out being different from what you expected

Used in a kidding manner and only for minor things

Person 1: Where's Mark?
Person 2: Oh, he's not coming, he said he had stuff to do
Person 1: .... amici amici e poi ti rubano la bici ....