Blake Shelton and Gwen Stefani both became single this summer after they divorced their respective spouses. Last July, it was reported that Shelton ended his four-year marriage to Miranda Lambert, while Stefani filed for divorce from Gavin Rossdale in August after 13 years together. Now, a new report claims that Shelton and Stefani — who are both working on "The Voice" as coaches — are in the early stages of a romantic relationship. 

According to a recent issue of Life & Style, the "Hollaback Girl" singer and the country superstar's alleged flirtatious behavior on the set of the NBC show has people "buzzing." 

"The chemistry between them is off the charts," a source told the magazine. "Everyone on set sees that Blake and Gwen are falling for one another." 

The insider added that "the pain they've endured" from rumors saying that their spouses have cheated on them has made them closer. The source said that the two were trying to keep the alleged relationship as low-key as possible, "but it's not happening partly because they're all over each other." 

The magazine's source said that it was the "Home" hit maker who initiated the romance with Stefani as he reportedly admired the singer's business savvy and how she is a doting mom to her sons Kingston, 9, Zuma, 7, and Apollo, 18 months. 

Another source told Life and Style that Shelton has been calling Stefani whenever they are not together and that he has been giving her gifts. 

"He sees Gwen as the ultimate woman, and she has been reveling in the attention," the source said.

The magazine also claims that the two have been spending time in each other's dressing rooms between takes and that they have gone out on "intimate lunches" as well. 

Both Stefani and Shelton have not divulged the reasons for their splits, but the source reports that the two have helped each other get through their difficult ordeals "by making each other laugh."

While the two have yet to confirm or deny the rumors, a source told HollywoodLife that the dating rumors aren't true, saying, "They are friends and that is it. They aren't hooking up."