It appears Blake Shelton and Gwen Stefani's relationship could quickly be on the way to it's end, according to recent reports.

Radar Online reports that Shelton, 40, recently reconnected with his ex-wife, Miranda Lambert, 33, when both attended an event in Nashville, and it quickly became more than just polite conversation between the two, with Shelton even allegedly "pouring his heart out" about how much he missed her.

"Blake said he's been carrying around a ton of emotional baggage and guilt since they divorced last summer," a source told the website.

And, when Stefani, 46, supposedly finds out, she's not going to be happy, since she was thousands of miles away from her beau when the supposed rendezvous at an unnamed gala took place.

"When Gwen finds out she'll go nuts," a source said. "Gwen has always been insecure and jealous over Blake's womanizing ways."

However, what could really cause problems for the couple of over one year is that fact that Shelton allegedly lied to his girlfriend about meeting up with his ex, saying he "avoided her" and "didn't speak to her" at all, and overall, nothing about the situation speaks well for the couple's relationship.

"Blake and Miranda reconnecting could be the nail in the coffin for Blake's relationship with Gwen," the source said.

Shelton and Lambert announced their divorce after four years of marriage and a decade together overall in July 2015, a few weeks before Stefani and Gavin Rossdale announced they were divorcing after 13 years of marriage and 20 years together overall. By November, Shelton and Stefani confirmed rumors they were dating, and Lambert went public with her romance with Anderson East by January.

Tags: Blake Shelton Gwen Stefani Miranda Lambert