Rumors are swirling that Gwen Stefani and Blake Shelton are “struggling” in their relationship right now after she admitted that he is “back in Oklahoma” without her.

The Sun reported that Stefani and Shelton have been dating since 2015, when they ended their respective marriages to fellow singers Gavin Rossdale and Miranda Lambert. They’ve been going strong for the past five years and spent virtually all of their time in quarantine together for the past few months, but in recent weeks, rumors have surfaced that they have entered a rough patch in their relationship.

Friends of Stefani, 51, said that they have been having “arguments” over “where to live and, especially, politics.” Stefani herself just revealed that Shelton, 44, recently “left to go back to Oklahoma.”

“[This] is the first time we’ve been apart in six months,” she added.

Stefani and her three young sons had spent months of quarantine amidst the coronavirus pandemic at Shelton’s ranch in Oklahoma. She said that it was nice “to be able to pause for a minute and be there with the boys and be in Oklahoma [because] he really has a stunning ranch.”

While everything appears to have gone well during their time on the ranch, things reportedly went downhill when they all went back to Los Angeles, California. It was then that fights began over where they should live, as Shelton loves Oklahoma while Stefani loves Los Angeles.

“Gwen and Blake are totally different. A fish can fall in love with a bird, but where will they make a home?” a source close to Stefani said. “They are great when they are together alone but whenever they are around his friends or her friends, it never ends well.”

“One of the reasons these two are still not married after five years together is because they can’t even agree if they should get married in his beloved Oklahoma or her home of Los Angeles,” the insider added.

This comes one month after another source spoke out to say that Stefani and Shelton “feel suffocated and stressed [and] they’re both stretched to the limit” after they bought a mansion in Encino, California for about $13 million back in May.

Stefani and Shelton continue to be judges together on this season of “The Voice.”