Gavin Rossdale has compared his co-parenting relationship with Gwen Stefani to a "two-lane highway" that doesn't merge.

The Bush rocker has sons Kingston, 19, Zuma, 17, and Apollo, 12, with his ex-wife and explained they make their own decisions regarding the welfare of their kids, which he thinks has worked out "fine".

Discussing co-parenting with the No Doubt frontwoman, Gavin told Fox News Digital: "It's a very, it is an interesting kind of… it's a two-lane highway, you know, but they don't ever seem to merge, which is fine.

"Probably doing the best she can, and I'm doing the best I can. And the kids are growing up, so I'm a proud proponent of the system. It's fine.

"It's a very, it is an interesting kind of, it's a two-lane highway, you know, but they don't ever seem to merge, which is fine."

The Swallowed hitmaker's priority with his sons is to not raise "jerks" but guys who other people like, so he tries to set a good example with how he leads his own life.

Talking about his parenting priorities, he said: "Making them likable. I think that if you've got kids that are unlikable, they've got a tough life ahead, you know. Life is hard enough without being a jerk, without being kind of aware of other people, mindful of other people, considerate of other people, empathetic.

"And so all those things that I try to do my best in my life to be... Just try to show by example with my kids, consistent friends, consistent people around and a sort of a steady approach to life."

Gavin, 60, thinks growing up is "very, very hard" for young people these days because there is a lot of "pressure" on them to succeed.

He said: "I feel connected to the pressure that young people have in terms of what to do. And if you go to college, what the hell are you gonna do in college, and then how are you going to pay off your student loans, and how are you going to go into the workplace? And it just seems very, very hard for people. Very, very hard. And I'm not sure if it's getting easier."

The Land of Milk and Honey singer - who also has daughter Daisy Lowe, 37, with ex-partner Pearl Lowe - recently admitted he is "terrified" of his children seeing him frail and old.

He told Contact Music of ageing: "It's unavoidable. I mean, it's exciting in some ways. In some ways, it's f****** terrible, but it's just my ego that is terrible, because I don't want to die and I'm just like, f***, just in 20 years, like my kids are going to be worried when I go to the f****** toilet at a restaurant, you know, go down the stairs and they go talk about me behind my back. He's doing really well, isn't he? F****** hell, he's all right, you know. So it just makes me appreciate life more. That's the only thing I can say about it."