O relacionamento deles não se desenvolveu além do estágio de "beijo" enquanto Harry ainda estava na escola.
Há uma passagem no Enigma do Príncipe, que pode parecer interpretada como insinuação.
“You’d think people had better things to gossip about,” said Ginny, as she sat on the common room floor, leaning against Harry’s legs and reading the Daily Prophet. “Three dementor attacks in a week, and all Romilda Vane does is ask me if it’s true you’ve got a hippogriff tattooed across your chest.”
Ron and Hermione both roared with laughter. Harry ignored them.
“What did you tell her?”
“I told her it’s a Hungarian Horntail,” said Ginny, turning a page of the newspaper idly. “Much more macho.”
Harry Potter and the Half-Blood Prince - Chapter 25
No entanto, como vemos no próximo livro, o relacionamento deles claramente não havia se desenvolvido além do beijo.
“So then I thought, I’d like you to have something to remember me by, you know, if you meet some veela when you’re off doing whatever you’re doing.”
“I think dating opportunities are going to be pretty thin on the ground, to be honest.”
“There’s the silver lining I’ve been looking for,” she whispered, and then she was kissing him as she had never kissed him before, and Harry was kissing her back, and it was blissful oblivion, better than firewhisky; she was the only real thing in the world, Ginny, the feel of her, one hand at her back and one in her long, sweetsmelling hair —
The door banged open behind them and they jumped apart.
“Oh,” said Ron pointedly. “Sorry.”
Harry Potter and the Deathly Hallows - Chapter 7