If a latest report in Life & Style is to be believed, Blake Shelton and Gwen Stefani were seen flirting with one another on the sets of 'The Voice.' This has sparked romance rumors involving the two reality TV star coaches, who became single around the same time, divorcing their respective spouses.

Quoting Life & Style, IB Times reports that Shelton and Stefani have supposedly taken their closeness to the next level and, regardless of making every effort to keep their nascent romance a secret, they have left people on 'The Voice' sets "buzzing" about their intimacy.

A source reportedly told the publication, "They're trying to keep it on the down-low, but it's not happening partly because they're all over each other," adding, "The chemistry between them is off the charts. Everyone on set sees that Blake and Gwen are falling for one another."

Meanwhile, Shelton filed for divorce from Miranda Lambert in late July, after four years into the marriage in the midst of cheating allegations against both of them. On the other hand, Stefani filed for divorce from Gavin Rossdale in August, putting an end to their 13 years of marriage.

Rumors about a romantic liaison between Shelton and Stefani surfaced as the former talked about relationships and mentioned that he and Rihanna could "end up hooking up."

While talking about the "Unfaithful" singer, Shelton told Access Hollywood, "I was amazed by Rihanna," adding, "She is so funny... And she's crazy about me. We'll probably end up hooking up at some point. I'm just saying."

Meanwhile, Rihanna would be helping out all four coaches on the newest season of 'The Voice.'

Earlier reports suggested that Shelton and Stefani were using 'The Voice' to deal with their respective failed marriages. Now, the report in Life & Style suggests that it was Shelton who initiated the romance with Stefani.