The 35-year-old "Atomic Kitten" singer, who recently called off her marriage to George Kay, says she is responsible for the end of their relationship, reported Female First.
"I am heartbroken... George was with me 24/7. It's like somebody has died. He was my best friend. I just feel like there's been a death and I feel like it's my fault. Like I've done something wrong," Katona said.
The 35-year-old star - who has kids Molly, 14, Lilly, 12, Heidi, eight, and Max, seven, from past relationships and 19-month-old Dylan-Jorge with George said she will always love him.
"I have worked hard to get my life back on track. I really wanted our marriage to work. I miss him every day but I know it's not healthy," she said.