Gwen Stefani and Blake Shelton are reportedly teaming up to ensure that her eight-year-old son Zuma has a memorable ninth birthday party.

According to a new report, Shelton loves spending time with all three of Stefani's boys, including 11-year-old Kingston and three-year-old Apollo, and has been extra involved in Zuma's upcoming celebrations, which are set to take place on August 21.

“Blake is having so much fun with Gwen’s boys, he’s going above and beyond to win their hearts,” a source told Hollywood Life on Friday. “He’s even offered to throw Zuma a huge birthday party next month at his place on the lake. He wants to do fireworks and do a big campout.”

Although Zuma will reportedly celebrate his birthday at Shelton's home in Oklahoma, he is reportedly welcome to invite anyone he wants.

“He’s offered to fly some of Zuma’s friends to Oklahoma for a weekend, he’s so generous,” the source continued. “Gwen is blown away by how involved he is with her kids, he’s scoring major points.”

Days ago, another report claimed Shelton was thrilled by the family dynamic he's had with Stefani and her children.

“Gwen‘s kids are her life and they’re an extension of her. And, Blake loves Gwen so much that it’s very obvious that he loves her kids just as much,” a source close to Shelton told Hollywood Life. “If he’s going to be with Gwen, he has to be with her kids; That is the trade off and he is embracing it 100%. Blake treats Kingston, Zuma and Apollo as if they are his own.”