Dec 29, 2010 10:21 GMT  ·  By

Kelly Osbourne doesn’t mind airing her dirty laundry in public, especially if it concerns an ex talking trash on her around town. The reality star took to Twitter to blast ex-fiancé Luke Worrall, with whom she’s been for 2 years.

It’s not known what prompted Kelly to end her relationship with Luke, but talk on the blogosphere has it that he was cheating on her and only using her to get his name in the media.

After the split, Kelly refused to say anything even remotely bad about Luke, tweeting once that everything that happened must remain private. It seems she’s had a change of heart.

Again, it’s not known what Luke did to tick Kelly off, but she’s not taking it (whatever it may be) lying down, putting him on blast on Twitter for what looks like claims of infidelity.

Her foul-mouthed rant is so vicious that, at one point, she even tells him to consider an easy job because his pretty face will only get him so far – and he lacks the intelligence to complete more challenging tasks.

“Just found something out that has hurt my feelings so bad :( and christmas was going so well,” Kelly first wrote, adding “What do you do when someone lies in the darkest way and you try to tell the person that was lied to but they don’t believe you?”

“I think the best part of this situation is that I have been painted out to be the crazy one when all I did was tell the honest to God truth,” she said.

She couldn’t keep up this polite façade for far too long though: after hinting the model tried to reconcile with her over Christmas, she went on to accuse him of the most vile (and unspoken) things.

“Luke Worrall is the biggest piece of [expletive], he has been trying to get back with me, I only came home for Xmas to see him. Meanwhile, he has been [sleeping with] hundreds of girls... behind my back,” Kelly tweeted.

“All he did was use me. All girls, beware of @Luke_worral he is a using [expletive]! He used me for my money and a free ride. He is lucky I am not spilling the whole truth about what he did!” the star said.

If Luke died tomorrow, Kelly wouldn’t care, she also tweeted, because he was officially the worst thing to happen to her in her life.

“I am and always will be too good for him...Darling, your pretty face will only get you so far because you don’t have the brains to back it up. [I] never felt heart brake like this in my life,” she added.

Luke did respond to this, tweeting only “lies on twitter awesome.”