"He's not giving up without a fight," the insider said of West. "Kim is the mother of his children and he's not going to just let that go."
"No matter if they're husband and wife, they'll always support each other," the source continued. "Her recent filing, or any filing for that matter, doesn't mean he's going to stop fighting to win her back."
The insider goes on to claim that the "Jesus Walks" artist — who shares children North, 8, Saint, 6, Chicago, 3, and Psalm, 2 with Kardashian — is a "family man at heart [whose] love and commitment" to his estranged spouse and their kids "will never change."
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"Despite the recent filing by Kim, Kanye hasn't lost hope to be with Kim again," the source told the entertainment outlet. "As he goes out more and he's holding events and concerts, he's always inviting Kim and will continue to do so."
"His sole priority is making sure she's taken care of and treated like a queen, whether they're married or not," the insider added. "That will always be a priority and that will never change."