Draco only let himself be pulled along a few paces, before digging in his heels and saying, "Wait, wait, this is making me uncomfortable," a feeling like ice dropped in Harry’s belly, and spread down his legs. He glanced down to where Draco’s arm was looped through his own; of course, he thought, he probably wouldn’t walk with a friend like this either - maybe Hermione, but certainly not Ron. He didn’t complain, therefore, when Draco pulled his arm free. He did look up in surprise however, when Draco simply swapped their positions, so that it was Harry’s arm that was threaded through his.