“In most cases, Blake goes out of his way to not ruffle Gwen’s feathers,” the insider said. “But he’s told her he isn’t going to stand for her to be anything less than polite and kind to Reba or she’s gong to be living in a house of discontent.”
Stefani allegedly sparring with McEntire hasn’t been the first time a friendship has gotten in the way of the couple’s marital bliss. Stefani hitting it off with Shelton’s tour mate, Carly Pearce, reportedly did not go over well with the Some Beach singer.
“Carly struck up a close friendship with Gwen while she was on tour with Blake,” a source told RadarOnline.com of Shelton feeling like a third wheel. “They found they have so much in common and really hit it off.”