You're Harry's ex girlfriend
Our tale starts shortly after Harry and Cho broke up in Order of the Phoenix. Ginny has just bumped into her in the corridor.
Ginny hung her head and apologised, "Sorry about that."
Cho reassured her, "It's ok, I wasn't really looking where I was going either."
Ginny looked up and gasped. "You're Harry's ex girlfriend, aren't you?"
Cho said, "That's me, but I'd like to think I'm more than that."
Ginny smirked. "A girl who's not afraid to stand up for herself, I like that." She added, "I'm Ginny by the way, Ginny Weasley."
Cho replied, "Cho Chang."
Ginny asked, "Did Harry ever mention me?"
Cho chuckled. "I think he was far too busy fawning over Malfoy to even have the chance."
Ginny giggled. "I had a feeling he didn't really like you, no offence."
Cho grinned. "No offence taken. I didn't realise for a while."
Ginny admitted, "You're fun to be around, Cho."
Cho smiled. "We should hang out again sometime."