He caught sight of someone approaching from the corner of his eye, and the fact that it was her so intently walking towards him made him relax a great deal. His first petty thought was that at least he could get out of their fast.
Followed rather quickly by the thought that she looked beautiful, and he really ought not be such a selfish git.
He smiled, because he couldn't help it. Because it was Penny, and she was happy, and he had always gotten a thrill seeing her happy. Of course, he got more of a thrill to think it was him that caused it.
He pushed his discomfort aside and he opened his arms to return her hug instantly. "Hullo, Penny," he murmured against her hair, focusing on her so he didn't distract himself by looking around for anyone with red hair and a grudge.
"Of course I came," he replied after a moment, pulling back enough to get a good look at her. "I...may not stay. Long. You understand. But..." He felt his face heat and sighed. Bloody Weasley complexion always gave him away. "I wouldn't miss your birthday."