The claims come after Andrew confirmed that he met with Celebs Go Dating bosses just hours after breaking things off with the Love Island host.
It seems that she was right, too, after the former "Apprentice" contestant shared a (now deleted) message on his own Instagram page admitting that it was true.
In her post 38-year-old Caroline said: "When you find out your fiance had been planning a meeting to go on Celebs Go Dating, and has the meeting the day AFTER you break up". When someone has no money and nothing to lose they tend to do insane irrational things.
"However, this was wrong".
Earlier this week, in a statement, Caroline announced they had split.
Love Island host Caroline, 38, told The Mirror: "I'm sad to announce that Andrew and I have made a decision to part ways".
"I am ashamed and trying to move on with my life".
"Please would you respect mine and Caroline's privacy and not try and speculate on who said or did what". Unfortunately it was not to be.
'Andrew used me, radio presenter Rachael Rhodes and Caroline- he used Rachael to up his profile and he's done the same with Caroline, she's definitely had a lucky escape he was clearly using her. "I wish him all the best". "It's back to the old grafting".
Andrew Brady, 27, shot to fame after appearing on the hit BBC show The Apprentice, and later appeared on Celebrity Big Brother where he got rather close to Courtney Act.
He said: "Sad to announce Caroline and I have chose to part ways". We wish each other well.
Describing her ex-boyfriend as fame-hungry, she added: 'Everything about Caroline and what she does is what he wants, I think he was jealous of her'.
She told Daily Mail's You magazine in May: "Andrew proposed totally out of the blue and it was very low key". In 2011, she dated One Direction member Harry Styles, despite him only being 17 and Caroline 31. Things aren't great between me and Caroline.