13/05/2012 13:03 BST | Updated 13/07/2012 06:12 BST

Alexandra Burke Ditches Love Rat Jermain Defoe

Alexandra Burke has ditched her love rat boyfriend Jermain Defoe after it was revealed he had cheated on her for a second time.

The former X Factor champ has been left devastated after discovering her footballer beau had done the dirty for a second time, just weeks after sleeping with a model behind her back.

According to The Sun, Jermain hooked up with nurse Kirsty Crummey at his mansion for a night of passion.

A pal tells the paper: “Alex is heartbroken but she has ended it. It’s all over. They are not together any more.

"Alex thought Jermain might be the one but has now decided to move on with her life.”

Kirsty claims the sports star chased her on Facebook, and then pestered her for saucy pictures and asked her to have a threesome.

They allegedly hooked up at a hotel before Jermaine started dating the pop star, but then had another romp at his home earlier this year.

And the nurse insists she's only telling the world because she wants Alexandra to know what Jermain is really like.

She said: "He preyed on my vulnerability. I wasn’t going to turn him down — I’ve never had a footballer like him show interest in me before.

“It was flattering but I know now he was just using me. He has hurt me so much. I just hope other girls reading this see him for what he is and don’t fall into the same trap I did — and Alexandra Burke now knows what he’s like.

“That’s the only reason I’ve decided to speak out.”