(Photo by Nathaniel S. Butler/NBAE via Getty Images)
Cardi B and Stefon Diggs have faced their share of turbulence since becoming a couple in 2025, and according to a new report, the rapper has reached her breaking point.
Sources say the 33-year-old artist has set clear boundaries with Diggs, making it clear that loyalty is non-negotiable. The reported ultimatum comes after the NFL star welcomed four children with four different women over the past year, a situation that has placed intense pressure on their relationship.
“She’s been very clear with Stefon: if he messes up, if another woman comes forward with a baby after they became official and started a family together, she’s done,” an insider told The Sun on Sunday on February 1.

According to the same source, Cardi’s message could not have been more direct. The “Bodak Yellow” hitmaker reportedly told Diggs, “that if he cheats or has a child behind her back, it’s over.”
Diggs, who plays for the New England Patriots, welcomed a son with Cardi B after they made their relationship official. In addition, he became a father to daughter Charliee Harper with Aileen Lopera, a son with K’yanna Barber, and a daughter with Cayy Benji, all in 2025.
Despite the complicated circumstances, the insider said Cardi entered the relationship with open eyes. “Cardi has known since day one that Stefon had a reputation as a womaniser and had seen multiple women in the past, but her love for him is above all of that,” the source explained.
“She knows he has been faithful since they made things official and that he’s been transparent about his previous relationships, only seeing her since they committed to each other.”
The report also suggests that Cardi has made a conscious effort to keep the peace with Diggs’ extended family. While the “WAP” star reportedly maintains an amicable relationship with his other children and their mothers, the situation is not without emotional strain.

According to the insider, she “does get upset when people talk badly about him, seeing it as disrespect.” Behind the scenes, the couple is said to be focused on building a stable foundation for their growing family.
The source noted that Cardi and Diggs frequently discuss parenting strategies and support one another in raising their children in a healthy, grounded environment.
For now, Cardi appears committed to making the relationship work, but the boundaries are firmly set. If Diggs crosses the line again, insiders say, she is prepared to walk away without hesitation.
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