She exclusively revealed to Us that she and her boyfriend, Nick Maccarone, have Dunn explained that she and the therapist, 27, split on April 9 after an argument on Instagram Live.
And Dunn moved on herself — she and cast member Nick Maccarone started a relationship while they living in the jury house though they too are no longer together.
And all the drama that unfolded while she was gone.
While Maccarone was romantically involved with housemate Bella Wang at the beginning of the season, he was caught getting flirty with Dunn in the jury house.
Which past Big Brother cast member did you like most? And that it's possible not everyone likes her.
Some claim this guy was just a friend, but others say they were very serious before Kat left to play Big Brother 21.