But it looks like ex-boyfriend Danny Cipriani is back in her life already - after she and the rugby player spent Saturday night together.
The brunette model, who split from Thom 10 days ago, wasn't shy about letting her fans know she and Danny are seeing each other again after she posted a very happy looking picture of the pair on her Instagram page.
Kelly tweeted: "Saturday night @Dannycipriani87 #Living" alongside the snap which showed the couple in what looked like the back of a car getting pretty cosy.
The Mirror reports that the pair spent yesterday afternoon together at a London hotel, before Kelly took Danny back to her place.
Later the two went for dinner in Blackfriars and then, according to the Mail Online, hit Base nightclub before heading back to Kelly's pad at 4am.
According to the Sunday People, friends say that the pair are trying to make their relationship work again after splitting back in June 2010.
Kelly called time on her relationship with Thom Evans last week, despite the pair looking very loved up as they spent Christmas together with their families.
The 33-year-old took to Twitter last week to say that Danny played no part in her split from Thom Evans, posting: "Thom and I mutually agreed to go our separate ways some time ago. It had absolutely nothing to do with a third party."
Meanwhile Kels has been on the front pages for a different reason entirely the last few days, after glamour model Katie Price called her a "heffer" in a load of skinny bikini pics.
Responding to the comments to the Mirror newspaper she said: "I was really disappointed when I heard what had been said. It is unladylike as far as I'm concerned for another woman to say that sort of thing publicly about another woman,"
She added: "I wasn't angry with what she said, just confused. I definitely don't look like a heffer and it's not something I am going to lose any sleep over."
"I was only angry because the comments put such a dampener on such an amazing trip to Miami to shoot my New Look campaign."
[Related story: Kelly Brook puts Thom Evans split behind her, gets her boobs out]
[Related story: Kelly Brook responds to Katie Price heffer comment]