Harm spent his time with the Pack and the 'Claw boys. He was all wrapped up in a woollen hat, scarf and gloves so he wasn't safe to be anywhere near anything flammable. He spent as much time as possible snuggling and smooching with Terry but he made sure that his boyfriend had time to speak to Mike.
He did not want to leave Terry when Dumbledore told them to go back in, but he did as he was told.