Greg took his time thinking over what - to most - would seem an easy decision. He definitely didn't want Potter in his flat, so that left two options. Greg wasn't stupid enough to miss that standing on his landing would risk having Mrs McHavelock come up and find him being interviewed. On the other hand, twenty minutes did sound a lot better than hours.
After a long few minutes, Greg huffed. "Fine." He closed the door in Potter's face without waiting for a reply. For once, he'd come home in his magenta robes, but there was no way he was putting those back on. Actually, it seemed stupid to put any robes back on. He'd only have to clean them, and it wasn't as if he was planning to leave the flat again tonight. Knowing he hadn't done anything wrong, he was confident Potter couldn't make him leave.
So, after a quick drying charm, Greg changed into black pyjama bottoms and a green sleeveless top. He didn't like to be too hot at night, and his duvet cover was more than thick enough to mean he didn't need more fabric on his body that was strictly necessary. Potter was, unfortunately, still outside when Greg opened the door. He stepped out into the hall to join him, closing and warding the door to his flat behind him. He wasn't taking any chances.