The 'Work B***h' singer parted ways with long-time partner Jason in January. They had been together since 2009 and became engaged in December 2012.
Speaking to Alison Hammond on ITV's This Morning, she said: "It was a hard break-up. It wasn't one of my hardest break-ups but I definitely had some things to say in my album about it."
Britney is currently on a promotional blitz for eighth studio album Britney Jean, which was produced by her Scream & Shout collaborator will.i.am.
"I co-produced it with will.i.am. He is so much fun to be with - we put our heads together, it was like a scientific experiment, it was really cool. He's off the wall, he's like a little kid genius. He's so excitable!"
She added of the album, which she co-wrote: "I wanted to do something that was a little more personal for my fans because I went through a lot this year and I wanted to share those personal moments with them."
Britney will wrap up 2013 by launching her hugely anticipated Las Vegas residency in December.
Discussing her preparation for Vegas, she said: "I have a vocal coach who I'm working with weekly and I have training rehearsals three to four hours a day. I have a lot of work ahead of me!"
Watch Britney's music video for 'Work B***ch' below:
Check out Britney's transformation from school girl to sex symbol below:
Copyright: Britney Spears / VEVO