"Blake thought [Stefani would] be happy they'd gotten the chance to call some things water under the bridge," a source said.
"Instead, though, it sent her into a panic." Stefani's alleged panic then led to her texting Lambert and warning her to "stay away from her man," and Lambert didn't take the threats lightly, so the two are now locked in an alleged heated feud that has those close to them worried about the possibility of the two coming face-to-face any time soon.
In the year that has followed, the exes have handled the split very differently from one another.
Both he and Lambert moved on fairly quickly afterwards as well, with Shelton and Stefani going public with their romance in November, and Lambert going public with her own romance with musician Anderson East around New Year's.
In addition, there has been endless gossip lately which has suggested that Shelton and Stefani are even planning a Christmas wedding at his Oklahoma ranch, a report that hasn't been denied or confirmed.
Miranda Lambert isn't being shy about moving on from Blake Shelton -- she's sticking close to her new boy toy in Las Vegas, where it's likely they'll bump into Blake ... Sources at the Academy of Country Music Awards say Miranda's been parading around singer Anderson East all weekend, and introducing him to everyone as her "boyfriend." That's not surprising, they've been together for a few months, but It's interesting because her ex, Blake will also be at the ACMs.
Far as we can tell, this is the first time she's brought Anderson into a situation like that.
Miranda Lambert said she found herself inside bars more following her divorce from Blake Shelton.