Dumbledore had started a study group and required that people who were falling behind in their classes join it. He asked Hermione to lead it because he was too busy. Hermione didn't explain why a teacher couldn't lead it though.
Luna joined because she was failing Care of Magical creatures. She never did like that class. Professor Grubbly-Plank gave her a lot of detentions. Harry and Ron had Quidditch practice whenever the study group was going on though, so they couldn't make it. Luna thought that was rather strange, but kept her nose out of it.
The first study group there was nobody there but a couple of Ravenclaws she didn't recognize, two Slytherins and three Hufflepuffs. Nevile was there too, he needed potions help.
They paired up randomly each time, with Hermione drawing names from a hat. Luna got paired with Neville. "Watch out for the Wrackspurts," she told Neville. They studied quite productively for a while, Luna helping him with the potions ingredients and what they did. "And that's why, as long as no nargles are around. but they hardly are, why do think Potions is in the dungeons? you don't add the porcupine quills before taking the cauldron off the fire." Neville's eyes widened. "Ohhh! That makes sense now!"
A couple weeks later, she had been paired with Neville again and she was wondering why he was acting so shy now. They worked on Transfiguration this time and when Luna couldn't even understand his sentence he was stuttering so hard Luna interrupted him. "Why are you so shy now?" Neville turned red and stuttered something about going. Luna was puzzled. "Are the Wrackspurts getting into your brain?" "I um like you Luna," "I like you too Neville." "No like I want to um kiss you like you." Luna thought about this. Then she said decidedly "I like you like that too."
Neville blushed an even deeper red if that was possible. "Does that mean we kiss?" asked Luna. If she was correct, if two people liked each other then they could kiss. Well that was what the Ravenclaw prefect said. Neville was now redder than the reddest thing I have ever see.
"I-I think." He leaned in and placed his lips on mine. A shock went through me. He drew back and now I was stuttering. "If-if that's what kissing's like, I want to do it again!"
Hermione never did let us study together again. On the other hand I probably wouldn't have learned much if we did...
Sorry about the third person to first person (i think it was third to first person... I'm not good with that) change I wasn't sure how to write a kissing scene without changing it. I also don't have a beta so all mistakes are mine.