Brad didnt like Katie, and he didnt want her in the house. He hated how she just intruded into his property even though the sign said not to, he hated how she followed Josh here when he didnt want to be found, he hated how she barged itno his house, how she broke into Josh's mind against his will, and how after all of this they ask for dinner and think she could stay here. "Get out of my house!" he said.