On Friday night, Kelly revealed that she was no longer engaged to the former Gladiator.
In a tweet which surprised many of her fans, Kelly said: "It's a sad day but I wanted to share with you that David and I are no longer engaged. I love and respect him and wish him all the best."
While her Twitter followers responded with mixed reactions, rumours soon circulated about the reasons for their split.
After all, the pair had only recently returned from a romantic holiday to Greece.
Today's Sun On Sunday (28 September) claims Kelly ended their relationship after David cheated on her with his ex-girlfriend Sarah Harper.
The woman also claims David was a drug user.
But Intrigue Management has now released an open letter on behalf of 'a deeply upset' David.
The statement, posted on Twitter, is two pages long.
In it, CBB star David claims Sarah is a drug user who he dated for about four months. He strongly denies taking drugs with her.
He says: 'When I began dating Kelly, out of respect to her, I decided it was time to finally cut all contact with Sarah. Unfortunately, she didn't respond well to this and blackmailed me.
"Sarah's claim that I slept with her whilst with Kelly is 100% untrue and I categorically deny it. I'm incredibly hurt and sickened by Sarah's false accusations and believe she has done this out of jealousy and spite because she knows that, 1) I'm not interested in her romantically and 2) I only love and want Kelly."
In the heartfelt letter, David goes on to say: "I did not cheat on Kelly whatsoever. Kelly is my world and, other than my son, she's the only person I've ever truly cared about in my life.
"Since being with Kelly, I've been so happy. I've been focused and working hard to become the best man I can be. I'm absolutely devastated that Sarah's lies have caused Kelly to end our engagement but am even more deeply upset that the woman I thought loved me and was literally my life would not stand by me."
Sounds like David needs a big hug... Any takers ladies?
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