Draco did truly miss his crew of friends, missing Pansy and Theodore the most. But those kids got him in so much trouble growing up and their parents including Draco's were still to this day Death Eaters...and that was something Draco was avoiding like the plague! But he missed Pansy so very much, and Harry was right! It was time to try and make up and move on. Friendships are far too important to sweat about the small stuff.