Explaining the reasons for the break-up, a source told the Daily Mail: "Patsy didn't see a future in her relationship. They are two very different people.
"She has strong feelings for him but doesn't see him as part of her life anymore. She decided to finish it before it got any more serious, Patsy is a mum of two while Killa is very much a young guy who isn't ready to take on a family like Patsy's."
The former Emmerdale star has a history of dating musicians, marrying Oasis singer Liam Gallagher, Simple Minds' Jim Kerr and Big Audio Dynamite member Dan Donovan.
The source added: "It's difficult for Patsy. She has a wild party streak and likes to enjoy herself, that's why she keeps going for musicians, but she's now realised she's not getting any younger and maybe it's time to settle down properly."