Though fans were hopingCardi BandOffset‘s breakup wasfake news, the pairhas indeed splitafter 15 months of marriage, PEOPLE confirms.

“They have obviously had huge problems for a long time,” a source tells PEOPLE on Wednesday, the same day Cardi, 26, announced on Instagram in a since-deleted video that she and the Migos rapper, 26, had separated, four months after welcoming daughterKulture Kiari.

“They’re still very close and really do care for one another,” the source shares. “Their priority now is their daughter, and they plan to be solid co-parents.”

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Jeremy Scott show, Front Row, Spring Summer 2019, New York Fashion Week, USA - 06 Sep 2018

TheInvasion of Privacyhitmaker added, “We are really good friends, and we are really good business partners — you know, he’s always somebody that I run to talk to, and we got a lot of love for each other — but things just haven’t been working out between us for a long time. It’s nobody’s fault, I guess we just grew out of love, but we are not together anymore. It might take time to get a divorce, and I’m going to always have a lot of love for him because he is my daughter’s father.”

Representatives forCardi Band Offset did not immediately respond to PEOPLE’s requests for comment.

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On Tuesday, the mother of one was spotted ata music video shoot in Miamifor an upcoming music video wearing nothing but a rhinestone bikini.Noticeably missingfrom her left hand were her famously hugeengagementandweddingrings.

Both Cardi and Offset are in Miami for Art Basel, where Cardi is set to perform at E11even on Wednesday evening.

Cardi’s announcement came just a few days after she shared photos of herself and Offset kissing at a recent Lakers game.

In June, Cardi revealed that she and Offset weremarriedafter heproposedto her on Oct. 28, 2017, onstage at Power 99’s Powerhouse concert in Philadelphia with an 8-carat, pear-shaped halo diamond sparkler.

Also on Wednesday, the newly single “Be Careful” rapper shared thefirst photo of Kultureon Instagram, writing, “My heart.”

source: people.com