The 36-year-old pop guy, who is in a relationship with actress Ayda Field, says that a recent charity trip to Haiti urged him to consider adoption, after meeting masses of homeless orphans there.
"I wanted to adopt straight away," he told the Sunday Mirror. "That's the instant guilt thing you get when you first get to somewhere like that.
"But I've got a few things I want to do before that happens. I'll probably have a couple of my own first and then I'd like to adopt a couple too.
"It's something [Ayda and I have] talked about. I think it's on the horizon but I don't know when."