"It's one of those mad love affairs that you can't live with and you can't live without, and you just keep going and going," the peroxide pop queen tells the London Observer of her hubby of five years. "And time goes by and you get the rocky times then you get the intense love times, then you get the reward of having the baby. It's just this ongoing saga."
Gushes Gwen, 37, who welcomed son Kingston in May 2006, "I'm interested to see what's going to happen next, you know?"
Stefani is crisscrossing the globe with her "Sweet Escape" tour, and she enthuses how "really convenient" it is to nurse the always nattily dressed Kingston while she's on the road.
"I don't know when I'm going to stop breast-feeding," she tells the paper. "I'll just keep going while I can -- like, he's getting his teeth so it is a little bit scary. He's bitten me a few times!"
She adds that if Kingston couldn't come along with her, "then I wouldn't do this. I know that's not going to last, and he's going to get more demanding and there will be school and stuff. But for now I get to do it all."
And Stefani could be doing it all over again, too. She reveals that her plans are to re-create her past.
"Make babies, make music," declares Gwen. "I'm on repeat mode."
One thing she doesn't want to repeat, however, is embarking on another tour while pregnant, a belly-expanding experience she describes as "hell on earth."
Still, concedes Stefani, "to look out and see girls from the age of 8 to 15 in the front row -- who obviously didn't know that I was pregnant even though I was feeling like a big fat huge whale -- they were looking at me like I was Cinderella. And it was so ... amazing. So rewarding."
Although she quickly dropped the poundage that made her feel like a zaftig, ocean-dwelling mammal, she admits she has some lingering self-image issues, despite her best efforts to the contrary.
"I try not to be but I'm super-neurotic about diet," explains Gwen. "I'm neurotic about trying not to be neurotic! I'm like every other girl. I have to try really hard my whole life to try to be fit. And I'm super-vain. And I want to wear cute clothes."
Says Stefani, "You know, I was chubby when I was a little girl. And I have all those issues everyone else has. But I try not to. And I've learnt over the years that it's such a waste of time. And people like me whether I'm a little bit fatter or not."