Ariana, however, didn't hesitate to shut down the rumor on social media.
"we dont have an open relationship. i’m really not that cool. thought that was obvious," she tweeted.
The 37-year-old went on to reply to a since-deleted tweet from a fan, who asked her if she's "no longer" bisexual, to which she replied, "bisexual ≠ polyamorous."
After another user said that they were "glad" Ariana "clarified that s--- early" on, she replied, "lmao right? like are we really gonna waste episodes on trying to figure that one out."
Meanwhile, the reality star -- who has been in a relationship with Tom since 2014 -- also shared a funny Morticia Adams GIF after another fan praised her for "cutting the nonsense off from literally the first second it's heard."
See Ariana's tweets in the post, below.
we dont have an open relationship. i’m really not that cool. thought that was obvious. #pumprules