The couple started dating after working together during the Big Reunion tour last year.
Within months Natasha, 32, and Ritchie, 35, were expecting their first child.
Natasha told the Mail Online: “We've known each other for years, we weren't close but we obviously saw each other a lot at events. I wouldn't say he was someone I ever pined over, but I always found him attractive.
“When he moved to Australia,' Natasha continued. 'We hadn't seen each other in years. But last year we all spent a lot of time together. You get to know a lot about each other. We had a friendship which was great.”
The mum-of four added: “We have a lot in common. Ritchie doesn't care what people think and it has made me stronger.”
Natasha gave birth to her first daughter, Ella Rose, earlier this month.
EVERYTHING YOU NEED TO KNOW ABOUT NATASHA HAMILTON
During a recent documentary special, fans were shocked to learn that the couple were planning on calling their daughter Ella Awesome.
Ritchie and Ella had a change of heart when their daughter eventually arrived, healthy and happy.