Gwen Stefani, 48, and Blake Shelton, 41, are said to be trying for their first child together.
The Voice co-judges - who have been dating since November 2015 - are reportedly 'hyper-focused on getting pregnant' and are prioritizing their baby dream over tying the knot.
A source told magazine: 'They will get married one day but right now they are hyper-focused on getting pregnant. They believe there is still a chance for Gwen [to fall pregnant]. They are incredibly hopeful.
'Gwen and Blake started talking quickly about having a baby, but starting a family has not been easy for them. It's something that they really want and it's just not working out the way they wanted it to.'
The Hollaback Girl hitmaker already has sons Kingston, 11, Zuma, nine, and Apollo, three, with her ex-husband Gavin Rossdale, 51.
But the singer is keen to have another child because she knows how much Blake wanted a family with his ex-wife Miranda Lambert, 33.
The insider explained: 'Blake told Gwen he does want kids of his own and Gwen was willing to try. With her, Blake has the exact relationship and family life he'd hoped to have with Miranda.
'Gwen's everything he wants. They are so committed to one another.'
The musician is said to be keen to prove how serious he is about the blonde beauty by converting one of his old inkings into a tribute to her.
