The revelations came as Billie spoke to former co-star David Tennant about their stint on the sci-fi series together for their latest podcast.
While David admitted he felt “like a pop star” when the duo found themselves catapulted to stardom on the highly regarded series, for Billie the attention was not so welcome.
Billie, who has been through this type of mania before, said she found the scrutiny she was receiving again “boring” and “really difficult.”
“Starting Doctor Who reminded me of that,” she tells Tennant. “The kind of pressure and responsibility was a big part of it because I was in my early twenties and pretty wild. And then you are the face of a family show. I found it really difficult. ”
“Because you’ve kind of been there before?” Tennant asked.
“You become that thing for people and you really don’t have a role in it,” Billie explained. “And so you have to behave a certain way or at least try to do it, and that’s pretty boring. ”
“It’s not the worst thing in the world, but it does mean that you can’t be completely yourself. And that means you become incredibly guarded. And for me, a recluse, always.
Billie signed the revamped BBC Show in 2005, with David joining her as Christopher Eccleston’s replacement from 2008-2010.
During her conversation with David, Billie described the “dark place” she found herself after her swirling years as a pop star.
“I was so tired. If I’m being honest, I was really exhausted, ”she admitted. “I also wanted to have some freedom. I wanted to stay home and learn how to cook properly and do what looked like curing things.
“Plus, I went for three years getting hammered with Chris Evans,” she joked.
Billie and the DJ tied the knot in Las Vegas after six months of dating when she was 18 and 35.
Despite the controversy over their union at the time, Billie was happy to admit that they had had a “great time together.”
“I guess that’s how your college days felt. A little reckless, but you learn a lot. It was an amazing time and not to undermine our relationship because we also had a very loving relationship. we are, go out, fuck. We have had a very caring and loving relationship.
The marriage lasted only three years, but the couple remained close friends.