Kelly Osbourne is "not dealing" with her split from Luke Worrall very well.

The TV star is struggling to come to terms with the fact her fiance - who she has dated for two years - cheated on her with another woman and is finding it difficult to stay positive about the situation.

In the early hours of this morning (15.07.10), she tweeted: "i am not dealing with this very well :( keeping your head up is not fun! going to bed thank god for tomorrow!(sic)"

The 25-year-old starlet's saddened note follows a series of other online posts, including one where she confirmed the split in an angry twitter post to a journalist who claimed it was ok for Luke to cheat because she was "frightening".

Kelly wrote to blogger Dan Brickley: "Thanx your a really sweet heart so what your saying is that im ugly so it was ok for him to cheat go f**k yourself!!!!!(sic)"

However, in a later message, Kelly's emotions seemed to have improved slightly.

She wrote: "you can take my heart but NEVER my sense of humor!(sic)"

This was followed by, "i have decided to comment through song and i believe en vogue says it best!(sic)" alongside a link to a video of the R'n'B group's 90s hit 'My Lovin' (You're Never Gonna Get It)'.

The reality TV star - who is the daughter of Ozzy and Sharon Osbourne - recently admitted her shock at still being with the 20-year-old model.