The Love Island host is thought to have hit out at the Apprentice star on her personal Facebook account on Thursday night, saying that she was in “utter shock”.
In screen shots obtained by The Mirror, Flack’s updated status reads: “When you find out your fiancé had been planning a meeting to go on Celebs Go Dating, and has the meeting the day AFTER you break up.”
Earlier in the day The Sun had reported that Brady had attended a meeting with show bosses on Wednesday, just hours after the pair confirmed their break-up.
Flack asked fans to respect their privacy on Twitter just a few hours after reportedly updating her Facebook status.
She wrote on Twitter: “I’ve revealed nothing. We wish each other well... Please please just give us our space and let us have some privacy right now thanks x.
According to The Sun, Flack reportedly told friends she felt “used” by the former Celebrity Big Brother star.
A source told the publication: “I really tried to help him and support him, but I feel he just used me. He’s fame hungry.
“Caroline doesn’t wish any ill on Andrew. She loved him and tried to protect him.
“She just doesn’t understand why he’s done this.”
Flack and Brady met in January following his stint on Celebrity Big Brother and became engaged after just a few months.