"Let me explain." Cho stood up from the couch, turned her face away. She took a breath. "There are some girls who I would never touch, under any circumstances." She wrinkled her nose. "Like Millicent."
Hermione waited for her to continue.
"Then there are some girls who I think are hot, and would be happy to help explore their more deviant sexual urges, and then send them on their merry way and never look back. Like, say, Ginny."
Again, Hermione waited.
Cho looked at her quickly and wrapped her arms around herself, toeing a pattern in the rug. "And occasionally I meet a special girl, and I want nothing more than to touch her, to hold her, and kiss her, but I can't because I know I could fall in love with her. And to spend one night and then watch her walk away the next morning..." she hugged herself tighter, "it would just kill me." She looked up. "Hermione, I can't." Her eyes strayed back to the carpet. "I'm sorry, but I can't help you. You'll have to find someone else."
Hermione stood up to pull Cho back down to the couch, touching her lips with a soft kiss. "Yes, you can. And there'll be none of this 'walking away the next morning.'" She smiled and leaned in again. "I'm staying."