The gaunt Babyshambles star, who insists he is beating his heroin habit, said: "Kate has broken my heart.
"There's been this lockdown and I can't get hold of her. This is the only way I can get through.
"I need her to know that she's out of her f***ing mind. Kate, if you love me then realise I don't want any other girl.
"Do I still love her? Don't ask me that question. Why do you think I'm here today talking to you? I'm here to tell her that I love her.
"F***ing hell man, why does she read the Daily Mirror, anyway? She moans all the time about the f***ing paparazzi then first thing in the morning she's got to buy your paper."
Doherty's bizarre on-off relationship with Kate began in January 2005 when he performed with The Libertines at her 31st birthday party at her mansion in the Cotswolds.
Soon after they met, he accepted a proposal of marriage from her.
Doherty said: "It was love at first meet. When I met her she said she'd get a P tattoo, and I'd get a K. Soon afterwards she said 'I'm not fickle, I'll marry you'. I f***ed that up, didn't I?"
Then all hell broke loose when Kate suspected Doherty of cheating on her with a groupie.
Doherty spluttered: "Kate – a nasty old rag. We fell out for the same old reason. She accused me of f****** this girl who lives around the corner.
"We were watching a DVD together and Kate started going 'I could tell by the way you were sitting back there that you've f****d her'. I said 'You're out of your f****** mind'.
"I was really up for some peace and love that morning. I wasn't up for being called a c*** and being kicked in the head.
"She's got an awful temper. I grabbed a guitar and books and said 'I'm never going to be treated this way again'."
Doherty claimed that when he spent time with his female friends and groupies, Kate was always paranoid that he was having an affair. Yet, he said, he was driven to anguish by her "continual flirting" with other men.
Fuel was added to Kate's jealous fire when she suspected him of sleeping with another model.
Tempers flared and at the start of this month the catwalk beauty vowed their affair was finally over, threw Doherty out of her North London home and changed the locks.
Incredibly, wayward Doherty has since proposed to a stunning Parisian artist named Christine he met on the day Kate dumped him.
He is set to marry her in November. But, in his heart he still yearns for Kate to take him back.
The star candidly admitted: "I made rather a rash gesture. It was more in a fit of anger. I asked this bird Christine to marry me.
"She's gone back to Paris and I don't know what to do."
In a revealing outburst Doherty then poured out his real feelings for the girl he feels he cannot live without, whatever the tensions.