An alleged insider report reveals that Gwen Stefani and Blake Shelton's relationship is on the rocks due to Shelton's infidelity. The report also reveals that the couple's wedding is canceled.

After Gwen's ex-husband Gavin Rossdale cheated on her, it is said that she became more and more insecure. Because of that, she can no longer tolerate any cheating in her relationship with Blake. The "No Doubt" singer is bothered by the closeness of Blake and last year's "The Voice" winner Chloe Kohanski.

Chloe was on Blake's team, and Gwen is reportedly not happy with their student-teacher relationship. It also adds that Gwen confronted Blake about the issue and told him that she already decided to call off their wedding.

"Gwen feels as if she loves Blake more than Blake loves her right now," a source says, according to Life and Style. "She told Blake all about her insecurities and how she couldn't handle another heartbreaking divorce because of trust issues she needs to face."

However, Gossip Cop is quick to debunk the rumors. The website says that it is not true that Blake is cheating. Also, their wedding is not canceled because the pair were not even planning on getting married. The site also adds that Chloe has a boyfriend, which means that she is not with Blake at all.

The outlet also clarifies that Gwen is not insecure or worried about having Blake cheat on her because the rumors are not true. In fact, before the New Year, the couple spent time with Gwen's children -- Kingston, 11, Zuma, 9, and Apollo, 3. They had an outdoor adventure wherein they were seen roasting marshmallows on a homemade fire by the water.

Gwen and Blake met on the set of "The Voice." They confirmed that they were dating in November 2015. Gwen was married to Rossdale for 13 years and split in 2015. Meanwhile, Blake was formerly married to Miranda Lambert, but they called it quits after five years in July 2015.