Cardi B is said to have given Stefon Diggs a clear ultimatum after his headline-making year of fathering multiple children, warning him that she will walk away if history repeats itself.According to a Sun insider, the Bodak Yellow rapper put her foot down in her relationship with the Patriots' wide receiver and told him that if another baby mama were to appear, she would leave."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."Boston Celtics v New York Knicks - Game Four - Source: GettyThe source continued:"She told him plainly that if he cheats or has a child behind her back, it's over."Cardi B and Stefon Diggs' romance began in late 2024, following her split from her ex-husband, Offset. The new couple hard-launched their relationship in May 2025.Also Read: Why is Cardi B threatening legal action? Rapper shuts down false claims about her fatherCardi B reflected on "new season" as she welcomed her first child with Stefon DiggsThat November, the pair welcomed the birth of their first child together. Cardi B celebrated their baby's arrival on Instagram, with the rapper writing:"My life has always been a combination of different chapters and different seasons. My last chapter was the beginning of a new season. Starting over is never easy but it's been so worth it! I brought new music and a new album to the world! A new baby into my world, and one more reason to be the best version of me, one more reason to love me more than anything else or anyone else so I can continue giving my babies the love and life they deserve. This next chapter is Me vs. Me!" View this post on Instagram Instagram PostThe I Like It hitmaker continued:"It's me against all odds me against everything meant to get in my way. I've started prepping for tour getting my body right getting my mind right. There's nothing thats gonna stop me from giving you guys the performance of a life time! I've learned i've healed, and im loving the woman i've become! Thats what this next era means to me and i'm stepping into it better than ever."Cardi B has four kids in total, three of whom she shares with her ex, Offset.Stefon Diggs, meanwhile, has six children, from his previous relationships: a daughter born in October 2016, a daughter born in 2023, a son born in 2025, a daughter born in April 2025, another daughter born in 2025, and a son again with Cardi B. View this post on Instagram Instagram PostAlso Read: What's the new date for Stefon Diggs' assault case? Arraignment postponed until after Super BowlLast December, Cardi B had a meltdown on social following the reports that the NFL star spent the holidays with his other children."Y'all need to calm down. Is that cool? Ya've been dragging me for three or four days. Y'all have been a little bit too mean. Like, alright, now y'all are being a little bit too mean."She went on in the video, asking people to stop telling her what to do as she can't change the current situation.“I'm saying I already had a baby. Y'all want me to put my baby back in my p*say, huh? I don't know what y'all want me to do. You want me to leave my man and just go and f**k yours? I don't know… what y'all want me to do? What y'all want me to do? We can only go forward now. So I don't know."The WAP songstress, who is slated to commence her Little Miss Drama Tour in February, further revealed her hectic schedule amidst all the internet fiasco."2026 is in a couple of days. I have so much work to do once January starts that it's stressing me out. I'm going to be away from my baby, my baby is away from my personal life, away from my home. I have to rehearse for ten to twelve hours a day for the tour."