"I don't care if it doesn't!" Ben said, with all the same childish tone and force of an 'I hate you' that had no truth in reality, only in hurt feelings. He did care, but right now it hurt too much for anything to be easy to say except things to lash out.
"He's the jerk who drank her freaking blood and now he's too stupid to stop with her around!"
He threw himself against Castiel, grasping ineffectively at the air behind his back. She was in there, he just had to get to her. Of course, as tough as he was, as coached as he was in defending himself, it still wasn't going to get him past Castiel. He knew that, even if he didn't want to accept it.
"This is all her fault," he said, voice getting progressively louder. It was probably good that the neighbors never seemed to notice any of the things associated with the occupants of this apartment. "She's ruined all of it, all of it, and she has to go!"
Lunging again, Ben found it just as futile as the first attempt, which just made him more angry, more desperate to get this done before someone realized he was gone... or worse, Castiel's words made him back down.