Summary: Inspired by a plot device in How I Met Your Mother…..and a line blatantly stolen from Big Bang Theory. Natsu and Lucy realise they've been sharing a toothbrush this whole time but that's nothing on Gray and Juvia.

Pairings: Natsu/Lucy and Gray/Juvia.

YouTube Prompt: Any Juvia/Gray/Female love triangle to Avril Lavigne's 'Girlfriend'….because come on! We all know that's what Juvia is thinking XD.

It started when Mira asked Lucy what was wrong. The blonde celestial mage had come in, looking rather ill, and turned down her lunch in favour of banging her head against the table. Freed and Bickslow, who had been eating on said table, paused to look at her.

"Lucy is disgusting," Happy informed them all on her behalf, "And Natsu."

"Yeah we suspected Natsu was," Bickslow said amused, "but why is Lucy disgusting?"

Lucy looked up and glowered so fiercely that for one moment Freed had thought she turned into Evergreen and Bickslow had been turned into a statue. "I'm not disgusting," Lucy said coldly, "Natsu is."

"Hey!" Natsu protested. "You were using it too!"

"Using what?" Mira asked curiously.

"The sam-"

Lucy gagged Natsu with her hand when he retaliated it by licking it. "Urgh!" Lucy screamed. "Natsu that's disgusting!"

"Not really," Happy smirked as he floated above Lucy, "after all, you had his spit in your – OWWWWWWWWWWWW!" Happy screamed as Lucy yanked on his tail.

"You're not telling them anything! You'll make it even more disgusting than it is!" Lucy hissed. Everyone stared at her horrified. "Look," she sighed, "you know how you lot always barged into my house?" they all nodded deciding not to argue the point….today. (It wasn't barging in they were visiting!) "Well some of you leave things in the house. Like your toothbrushes. So I decided to clear everything out so I can actually have some room for my own stuff."

"It's good to have a toothbrush again," Gray said happily, "all mine keep disappearing. But what has that to do with being disgusting?"

Lucy blushed while Natsu blinked stupidly. "I don't see what the big deal is," he shrugged, "we've been using the same one for years but just because she realised now, it's suddenly disgusting."

There is a deadly silence as everyone blinked at Natsu. Lucy banged her head against the table again and groaned in embarrassment, Bickslow barked out a crazed laughter, and Freed turned a faint green that matched his hair.

"OH MY GOD!" Gray screeched, horrified, disturbed, and totally going to have nightmares for the rest of his life. "YOU TWO SHARE A TOOTHBRUSH?! THAT'S DISGUSTING!"

"Shut up, snow cone!"

"Who are you calling a snow cone?!"

And just like that Natsu and Gray were distracted by another fight. The others, however, were not as Juvia demonstrated as she cheerfully took Natsu's seat next to Lucy and patted her love rival's arm comfortingly.

"Juvia does not think it is disgusting," the blue haired girl reassured her friend. "She thinks it is a testament of how strong the bond between Natsu-san and Lucy-san is. In fact it is almost as strong and pure as Juvia's own bond with Gray-sama, after all we too share a toothbrush."

"What?!"

Gray was temporarily distracted from his fight which allowed Natsu to have the advantage and ploughed him into a wall with a punch before he could ask Juvia exactly what the hell she meant by them sharing a toothbrush.

"You do?!" Lucy asked wide-eyed.

Juvia nodded and sighed blissfully. "Fifteen of them," she said happily. Gajeel, who had been eavesdropping (since he had nothing better to do), face palmed. His best friend was a lunatic. "Juvia brushes her teeth with all fifteen of the toothbrushes she had taken from Gray-sama's bathroom while she is watching him bathe."

"I need a new lock on my bathroom door," Gray muttered. "Natsu," he said calmly as possible, "GET THE FUCK OFF OF ME!"

"That is fifteen near kisses every morning, noon, and night!" Juvia carried on, unaware of everyone's disturbed looks, or Gray screaming bloody blue murder at Natsu. "Fifteen very deep, and thorough, French near kisses – oh Gray-sama!"

Freed, who had never particularly had a strong stomach, pushed his lunch away unable to eat (not that it mattered, it was fish so Happy ate it instead) while everyone else just stared at Juvia feeling greatly disturbed.

"Oh sweetie," Cana drawled over her drink highly amused, "the buses don't go where you live, do they?"