She told Vogue in December 2019 that the reconciliation happened after they went through marriage counseling.
I believe in forgiveness. I prayed on it. Me and my husband, we prayed on it. We had priests come to us. And we just came to an understanding like, bro, it’s really us against the world,” she shared. “He has my back for everything, I have his back for everything, so when you cheat, you’re betraying the person that has your back the most. Why would you do that? We have come to a clear understanding. For me, monogamy is the only way.Cardi B, Vogue
Their marriage started on a high note. Offset proposed to her at a concert in Philadelphia in 2017 in front of thousands of cheering fans. Clips of the proposal went viral. However, the couple had married a month earlier, TMZ said.