Barty stepped back until he hit the wall, wrapping his arms around himself. He hadn't meant it and he'd apologised. Sam didn't want to give him a chance. Just called him names again. The only person he'd ever loved. He wanted Sam to stop crying. He wanted Sam to be happy. He wanted to stop feeling like crying himself.

He was angry too, like Sam. Angry and sad and unable to think of anything good to say. Anything that might not cause more trouble. "I don't know."

Now, that was the truth. "I don't bloody know."

He stared at the ground and hated a lot. "I didn't mean it."