I don’t think Brielle is with Cory anymore... something tells me that it was something small, because of the pressure and the minions, they aren’t together any more
She’s going to start being nice to Tara and try to get close again to spite Brielle and try to get into Tara’s head, but we all know she doesn’t actually like Tara and is still dying inside that they were around Brielle and that they accept her.