Despite his words to Zacharias, Justin did not immediately go over and give Mrs. Smith a hug - though in all honesty, she looked like she could use it. Years of attending functions of various sorts with his family had taught him much about decorum and the proper behaviour with persons of a certain class. He knew the Smiths were well-regarded in the wizarding world, and thus he approached her as he would a Lady or a Duchess. A polite bow, a hanful of soft words of condolence, and a question regarding where Zacharias would be sitting. He nodded and moved away to where a growing pile of floral arrangements were sitting not far from the casket.
Justin paused there. It was true that he had missed his own father's funeral, and he felt a pang as he saw the casket. For a moment, his mind imagined it was his own father there and his breath caught in his throat. He quickly lay the roses he had brought next to the other flowers, and quickly turned away to take a seat - right next to where Zacharias was expected to sit.
He looked through the crowd to where Zach was standing, and looked at him until their eyes met. I'm not going anywhere, his eyes seemed to say. You can't get rid of me that easily.