"Your business is yours and mine is mine. Why do you care so much whose **** I ride?" she asks on the new track.
The SNL alum admitted that during the ceremony, he told a joke to the late singer's family that didn't go over too well.
Many were quick to interpret the post as Grande's response to the online frenzy surrounding her relationship with "Wicked" co-star, Ethan Slater.
Erivo, who is set to play Elphaba in the film adaptation of the musical, described what "just works" between the two.
"F*** it, let's lay it all out there," the R.E.M. Beauty founder said, after admitting her past use of injectables made her feel she was "hiding".
Unconfirmed reports claimed last week that both Ariana Grande and Demi Lovato had also parted ways with the prolific music manager.