Ron was out doing Prefect duties. This consisted of traveling the halls just before curfew and shooing all the students still around to their dorms or common rooms. Ron sighed. Sixth years, in his opinion, had much better things to do that meander about tracking down students to send to bed. Especially when he was forced to do this alone while Hermione was boycotting his existence.
He had almost finished his rounds (after dealing with a smart-arse Ravenclaw second year and a venomous Slytherin with his girlfriend) when he heard a familiar voice whose owner seemed to be concealed by a large tapestry of the Hogwarts crest.
"…knew that."
Neville?
"Well, of course you wouldn't. It's being kept from the public."
And…Luna?
"I'm glad I have you too keep me up-to-date with Ministry plans."
"I care about you, Neville – I would hate for you to loose your toad to them. I quite like Trevor. Almost as much as I like you."
"I like him too – but I like you more."
"More than Trevor?"
Ron could practically see Luna's huge, pale eyes widening at the thought Neville held her above his pet toad.
"More than Trevor."
Neville's voice had lowered so low that Ron had to lean closer to the tapestry to properly eavesdrop.
"Luna," Neville said quietly, sounding a little nervous but steady in tone all the same, "you are my first girlfriend, and I want you to be the first girl I…"
"Yes?"
"I want to… I mean…"
It was quiet. Ron, wondering whether Neville's voice had dropped to a whisper, inched forward just a bit too much, and as he fell with surprising soundlessness through the tapestry-blocked opening, he saw Neville and Luna, hands entwined with each others, faces barely more than an inch apart.
Before Ron could say, "Oi!" Luna had pushed herself onto converse-covered toes and her mouth met Neville's, two pairs of eyes closing as their owners made contact.
It was brief, but somehow perfect. No tongue, Ron noted, but Neville and Luna were surprisingly smooth for their first time. There had not been an awkward nose bump, something that had come with his first attempt at a kiss. When Neville and Luna hugged, still blissfully unaware that their first kiss had been witnessed by another, Ron took his silent leave the way he had tumbled in.
As he headed back to Gryffindor Tower, mildly thinking that Neville and Luna were the last people he'd expect to have partners, he decided his duty for the night was done; he just could not bring himself to remind an occupied couple like those two of the nine o' clock curfew.