Blake Shelton asked Gwen Stefani’s sons for permission before proposing

(People Magazing)

“Blake told her boys that he wanted to propose and asked their permission,” a source close to Stefani tells PEOPLE in this week’s issue, on newsstands Friday. “Her family very much approves of him. He’s an amazing partner and a great extra dad to the boys. Gwen is ecstatic. The proposal was a surprise.”