Amy, 25, was left shaken when it was revealed ground worker Brad had sent the messages, but initially suggested they could work through it.
However it’s now been claimed the former TOWIE star has ended things – and there’s no going back.
A source told the Mirror: “It is definitely over for good. It was Amy’s decision. It just wasn’t going to work in the circumstances.”
Amy has been busy promoting her new book, 100% Me, which documents the rise of her business empire.
Speaking at a signing in Manchester, she added: “I’m a very strong person, I get up and go out there. Every day I’m really busy which is great, it takes my mind off it.
“I’ve got my dog Leo, I love that dog more than anything. Dogs never let you down.”
Speaking previously to Closer Online about the book, Amy said: “It’s not an autobiography – it’s an inspirational book about everything I’ve achieved.
“I want girls who might leave school and not know exactly what they want to do, to read my book and think, ‘You know what, I can do this, I can be like Amy and be successful.”
Amy has yet to confirm her split from Brad.