Things may not be all lovey-dovey between Stefon Diggs and Cardi B after all. But the famed rapper had an explanation for what went down on Wednesday. The two were seen in the middle of a tense argument outside a coffee shop and gym in Burtonsville, Md., just days after the wide receiver kissed Cardi during a Mother’s Day event .  Videos posted to social media, as published by TMZ , showed the Diggs, 32, and Cardi, 33, in a heated exchange, with Cardi gesturing at the wideout.  Cardi B and Stefon Diggs appeared to get into a verbal spat. TMZ Diggs, a free agent after being released by the Patriots a month after their Super Bowl 2026 loss , appeared to be unfazed in one video circulating on social media.  A video from a different angle appeared to show a person waving away someone who had tried to approach the two celebs.  It wasn’t immediately clear what the pair had been fighting about and TMZ reported that Cardi B had been overheard saying, “That bitch is messy.”  The outlet also…