Leaving entirely wasn't an option, and that damned unconcerned look on Theodore's face meant that he was damned sure he wouldn't be able to shake the other boy. Draco glared, but this wasn't a battle that would be won with insults - and it wasn't nearly annoying enough for him to hex the other boy. Not yet, anyway.
So instead he rolled his eyes after a moment. Fine, Nott would follow him. That didn't mean he'd acknowledge it. "I've shopping to finish," He said, and then turned his back to Nott and headed back down Knockturn, toward Diagon proper and Twilfit & Tatting's. He hadn't planned on being fitted for robes, but if Nott was going to follow him he was going to make damned sure he was doing the most boring thing he could think of.