Disclaimer: I do not own Ouran, but I do occasionally get the giggles.
Haruhi rarely got the giggles, but when she did, it was difficult to get her to stop. She'd started during the garter toss, when the fight for the coveted object resulted in a dogpile of former hosts and Nekozawa friends and extended family. It was apparently hilarious to her that her boyfriend of three and a half years emerged victorious, and his subsequent flipping and tossing the garter in order to enrage Tamaki, in addition to his attempts to stretch it out large enough to wear it on his head like the necktie of a tipsy businessman only amused her further.
Her mirth was extended enough that Kyoya, raising his eyebrow and speaking in a low voice to Kaoru, asked, "has she had a bit too much champagne?" The twin passed this sage observation on to his brother, who deemed it necessary to end the evening before she was exposed to more of the same conjecture from others.
She calmed herself, with difficulty, to say goodnight and congratulations to Nekozawa and his bride, but only burst out again as soon as they were outside.
The two of them laughed together all the way home, and as they were headed up the stairs to her apartment, Haruhi, as she often did, reached into Hikaru's jacket pocket for her keys. The habit was formed after first three times she'd left the expensive clutch that matched her dress on various restaurant tables. These incidents caused him to stop insisting that she carry one and led to his tendency to keep her important things in his own pockets so they wouldn't get lost.
"Seriously, if you'd seen the look on Kyoya's face when Tamaki accidentally elbowed him in the gut, you'd still be laughing too," Haruhi giggled, as she fished around for her keys.
Suddenly Hikaru jerked away from her. "Get out of there!" he insisted, as they reached her door.
"Are we going to stand out here all night?" she asked, withdrawing her hand.
"No," he said, searching in his pocket for what she needed.
"Why won't you let me get them? You've never minded me grabbing them out of there before."
"Because," he answered stubbornly as he unlocked the door.
As soon as they'd gotten inside, hung up their coats and taken off their shoes, Hikaru tossed Haruhi's keys in the bowl in the kitchen and went to find something to put the flowers in. When he joined her in the main room, he found her sitting at the table. "W-where did you find that?" he stuttered, when he saw what she was wearing on her left hand.
"In your pocket!" she declared. "How could you just leave it in there with my keys?" she asked, inspecting it for damage. "You could have knocked one of the stones loose."
"Haruhi," Hikaru protested. "I was… sort of saving that for a special occasion."
"Like what?" she asked, "my birthday?"
"Well, no…" he admitted. "But I was thinking about the best time to- "
"Did you have any plans to give it to me any time soon?"
"I guess not."
"I think it's safer on my finger, then," she decided.
"But, Haruhi," he said, setting the vase down and arranging the flowers in it. "It's sort of… an engagement ring."
"I know," she responded.
Hikaru frowned. "So… are you just keeping it safe until I ask you to marry me, or are we engaged?"
"That depends," she said, smiling. "Was that a proposal?"
Author's Note (July 12, 2014): Again, this oneshot is not connected to the previous two, but comes right after the first chapter.
(Also, I totally stole the "ring in the pocket with keys" thing from my hilarious husband, who stashed my engagement ring in his pocket the night he proposed to me.)