Olly Murs has said he found it "liberating" to write about his past relationship for his new album saying the writing process was "exciting as well as being quite sad."

The popstar earned his fourth UK number one album with his latest release 24Hrs – which means he is tied with One Direction as being the most successful former X Factor contestant in the show's history – and he described the time around a new release as "nerve wrecking".

"It's probably the most nerve wrecking [time], definitely," Murs told RTÉ Entertainment. "You know when you put it out there you're not too sure what to expect. I mean, I know I have great fans but you're never complacent, you never think, 'Oh I'm definitely gonna get number one'."

The album draws on Murs' personal experiences with love, and his past relationship with ex-girlfriend Francesca Thomas, who he dated for three years before parting ways in 2015.

Murs said that he expects the album might be difficult to listen back to in a few years time as it will bring back memories of their relationship and "what was right and what was wrong about it."

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"I think it'll be hard to listen back to it, maybe in a year or so time, when you think back to that time again, it will probably always bring back memories, this album, of where I was, where I was when I wrote this album, who I was writing about," he said.

"It'll always bring back memories of my ex-girlfriend and what was happening in our relationship; what was right and what was wrong about it."

The Wrapped Up hitmaker described the writing process as "exciting as well as being quite sad."

"It felt good and liberating to go into the studio and write about experiences and something different, and I'd never done that before. It was quite exciting as well as being quite sad... I think it's going to be upsetting in a couple of years time probably when I listen back and remember what happened," Murs told RTÉ Entertainment.

Murs also addressed the rumours that he might collaborate with his close friend Niall Horan - click the video link to hear what he had to say.

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