The pregnant model has been silent on Twitter since 7 May, when she sent a flurry of tweets branding Kieran "disgusting" for cheating on her with close friend Jane Pountney.
Now, the 35-year-old has returned to Twitter, posting a link to a cryptic message to fans under the heading: "My feelings today."
The message Katie directed fans towards said: "HATE has 4 letters, but so does LOVE / ENEMIES has 7 letters, but so does FRIENDS / LYING has 5 letters, but so does TRUTH / HURT has 4 letters, but so does HEAL."
It added that "every negative energy" should be turned into an "aura of positivity", concluding: "It's our perception that makes the difference in the way we feel."
Does this mean Katie is now looking to the future and focusing on the positivity in her life, including the impending arrival of her fifth child?
Katie was left heartbroken when she learned Kieran had embarked on a seven-month sexual relationship with her friend Jane.
Making it worse for her was the fact confirmation of the affair came just three days after she publicly announced she's six months pregnant with Kieran's second child.
Kieran has yet to make a statement on the affair, but Jane has confirmed it did happen and that she "deeply regrets" it.
A source told Reveal that Katie's younger sister Sophie was the one who initially raised suspicions about Kieran and Jane's relationship.
Katie and Kieran married in the Bahamas in January 2013 following a whirlwind romance and Christmas proposal. Their first child, Jett, arrived that summer. Katie is also mum to sons Harvey and Junior and daughter Princess from previous relationships.
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Katie's ex-boyfriends in pictures:
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