The Coming Clean star has begun dating artist Steve Alce after meeting him at a charity dinner in October.
Katona told the Sunday Mirror that she had fallen for Alce's "mysterious" side and his "kind and caring" nature.
"I'm in love with him. I really, really like him," she said. "He is lovely... kind and caring. Steve is so unlike other men I have been with and I can honestly say I have never felt this strongly about anyone before.
"He is not with me because of my fame and wants to stay out of the limelight. He likes Kerry being Kerry and takes me for who I am. He is quiet and thoughtful - almost mysterious - which I love."
A source claimed that Katona, who has two failed marriages to Brian McFadden and Mark Croft, is convinced that Alce will be 'The One'.
"Kerry is madly in love and says Steve is 'The One'," they said. "He is fairly wealthy in his own right and not at all fazed by her fame."
Katona previously signed up to dating website Match.com in her quest to find love.
One of the men she met on the site, Stuart Nuttall, recently accused the reality star of being "dull".