“I’m very much aware of being a ‘Skype father,’ which is sad,” he says. “But I have to have the finances to make sure [my son will] be secure, and I can only do that by working.”
But he doesn’t like to be away from Louis for more than three weeks.
“I like to go no longer than three weeks without seeing my loved ones, but it does take some juggling,” he admits.
According to the actor – who next stars as the villain Bane in The Dark Knight Rises and in the historical crime drama Lawless this summer – Louis lives mostly with his mother, ex-girlfriend Rachael Speed.
“[Louis] plays rugby. He’s rubbish at it but he’s really full of heart,” he says. “He’s a beautiful boy. But I would think that, wouldn’t I?”
The Warrior star also reveals that he’s “quite needy” with his fiancée, actress Charlotte Riley, 30.
“I was an only child so I got a lot of attention from my mum. I think that is naturally going to transfer onto any poor woman who’s in my life,” he says. “However, if you were my partner, you’d get a lot of attention back.”