tully's behaviour hurt her girlfriend and she was rightly dumped for it. I remember tully making out her relationship with drew was just a friendship when she was evicted, and that she wanted to reconcile with her partner. Now imagine what she said, how she spun it to her girlfriend in an attempt to save their relationship, and then imagine how it must have felt to watch tully slobber all over drew and brag that she is single. First this girl had to watch her loved one aggressively chase and then "own" drew, then she had to listen to all the excuses while tully tried to stay with her, only to feel lied to and betrayed AGAIN with her words to drew...
yes she dumped tully, but not because of her own wrong doing, or because she didn't want to be in the relationship anymore, it was purely because she was cheated on and that must have been fucked. I'm sure she felt punched in the face again. Of course she deserves her say.