Ouzounian's Instagram post comes after Affleck and Garner were spotted together in Atlanta on Friday
, where she's been filming Miracles from Heaven
. A source tells ET that "the mood was cordial but distant," when the former couple and their three kids -- Violet, 9, Seraphina, 6, and Samuel, 3 -- spent time together at a local mall the following day. The two parents barely spoke, nor did they touch or hold hands, but they did both wear their wedding rings.