Harry and Ginny
"A what?" Harry asked a bemused smile on his face. "A couple name" Ginny muttered, turning beetroot. "I heard some fifth years talking about them; it's a quick way of referring to a couple, like two names in one." She blushed even more deeply. "I thought it was sweet."
Harry chuckled and ruffled Ginny's auburn locks. He loved this side of her, the sentimental side so few people got to see." So how does it work then?" he asked, eyebrows raised. She grinned "Well, you take bits of both names and sort of, jumble them up" she said, gesturing vaguely. "So, Harry and Ginny" he said thoughtfully. "How about Garry?" "No." she giggled. "Hirry?" "Nope" she said. "Hanny?" "Merlin no" she said, obviously revolted. "I know, Hinny!" "Perfect" she grinned, reaching up on her tip-toes to kiss him.