These two are moving at lightening speed!

Gwen Stefani and Blake Shelton fell head over heels for each other after their respective divorces, and they're already making plans to tie the knot and have a child together, Us Weekly reports.

"[They] talk openly about their future together. They say things like, ‘When we get married . . .’ all the time,” a source dished to the mag. "[She] is totally smitten and wants to have a baby with Blake. Gwen is trying to get pregnant," the source added.

His desire to start a family was one of the contributing factors to the country crooner's split with ex Miranda Lambert, and the No Doubt songstress would love to fulfill that dream.

"Blake was dying to have kids, but Miranda kept putting it off. Gwen says she wants to give Blake his own kid. She wants a girl!” the insider revealed.

We guess when you know, you just know!