You might remember that Rebecca Ferguson and One Direction's Zayn Malik went out for a couple of months after the show finished.
Until now, neither of the pair talked to the media about what went wrong but Zayn recently admitted that dating the mum-of-two was a mistake.
He said: "It was a wrong idea from the start. It shouldn't have happened. I think it was a wrong decision to make at such a young age.
"Then it did end badly so we don't talk any more."
We're not really surprised that Rebecca isn't too pleased about what Zayn's been saying as she told New! magazine, "I was so shocked by what he said!"
"I'm not going to retaliate. All I will say is that there have been a lot of things said and he knows so far that I've stayed classy and quiet and bitten my lip.
"I'm not one to reveal big secrets about what's gone on in a relationship, and I think he was probably put up to this. I know him too well to think he'd say it deliberately."
Looks like we'll never know what went wrong between the pair as Rebecca has no plans to spill the beans.
"I won't talk about what went wrong between us but he knows what happened. And it is what it is. At this point in my career and at my stage of life, I won't expose what went on there."
Rebecca even spoke about Zayn's new relationship with Little Mix's Perrie Edwards.
She said, "I haven't [met her] but I am a fan of the Little Mix girls and she seems lovely. I think they're good together."
What do you think went wrong between Rebecca and Zayn? Do you think the age difference got in the way?
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