Adam Wright dated Edwards for 18 months and said that he was "very much in love" with her before she entered the ITV show. However, she allegedly broke up with him by text after she fell for Malik.
"My mates used to wind me up that she would dump me for a popstar," Wright told The Sun. "I would say no she won't, Perrie's not like that - but that's exactly what she did. X Factor changed her.
"I didn't believe it, but when I read it was true I was jealous as I still had feelings for her."
Wright also claimed that he felt "pushed aside" as Edwards competed on The X Factor, adding: "It wasn't on purpose, she was just really busy. I joked with her not to forget me when she was rich and famous and she reassured me that she wouldn't leave me.
"I was gutted I couldn't speak to my own girlfriend and I knew then that it was changing forever."
Wright insisted though that the pair are still friends and Little Mix will be receiving his vote at the X Factor final this weekend.
"I was gutted, I'd lost the girl I loved," he said. "But I know it was for the best. She had to concentrate on X Factor. When I see her on TV it's not as painful as I thought it would be... Little Mix are all brilliant singers and I'm backing them all the way."
Edwards has denied reports that she and Malik are dating.
See pictures of Little Mix on a homecoming tour in South Shields below: