United Kingdom, March 31 -- 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 kin...