Blake Shelton and Gwen Stefani have been at the center of rumors for quite some time and the two are said to have been romantically involved after they divorced their respective spouses. And now, a report claims that Shelton “thinks the world” of Stefani.

“If you don’t get along with Blake then you are the problem,” a source told Hollywood Life. “He is the coolest and nicest person and his friendship with the cast and crew is unmatched. Blake thinks the world of Gwen and he loves the friendship they have with each other. He holds the friendship very highly -- Gwen is a friend for life!”

Although there have been reports stating that nothing was brewing between the two, another source told Hollywood Life that they have been spotted flirting on the set of “The Voice.” “Blake and Gwen flirt like crazy! They had a great rapport right away, but it didn’t really cross over into flirting until they both split from their spouses,” the source said.

“Now, it’s full throttle. They have all these inside jokes and we tease Gwen because she laughs waaay [sic] too hard at Blake’s jokes. She has this little giggle that she does and it’s so cute. Blake loves to come up behind her, cover her eyes with his hands and do an Adam Levine impression or something. It just cracks her up,” the insider told the entertainment website.

After his divorce from Miranda Lambert, Shelton has been surrounded by the gossip mill. The 39-year-old country singer sued In Touch Weekly magazine after it claimed that Shelton went to rehab post his split with Lambert. Shelton filed a lawsuit in Los Angeles County Superior Court Monday against Bauer Media, the parent company of In Touch, and sought at least $2 million in damages for defamation and false light invasion of privacy.