AN: Most will probably think it is silly, but I was waiting to update this chapter like crazy. Naughty/OOC Gray. Loved to write this.

Seven Days of Love ~ Gruvia Week

By: BonneyQ

Day 03 – AU

When Erza left the keys of the Gymnasium to Gray, she had told him to lock everything up before he and Juvia left. He was still punching a sand bag and Juvia was holding it for him, as he did for her when she was the one punching it. Fairy Tail Gymnasium was the best in Magnolia and they were like a family, really. So, there was always someone there; the spare key was passing around a lot, but Makarov, the owner of the Gymnasium, trusted them, as long as the one who had the keys returned to Erza the other day.

After fifteen minutes that Erza left, Gray was bored. He didn't want to just punch a not moving target anymore and neither Natsu nor Gajeel were around for him to fight. Actually, there were only him and Juvia there at the moment. An idea occurred to him, as he saw her let go of the sand bag and praise his skills.

Hm… He seized her. Yes, that would work.

"Let's spar." Gray smirked when Juvia's expression became one of horror. She would never hurt him. They had fought once, but it was years ago, before she even had the Fairy Tail training. The Gymnasium was where she met him a few years ago (in an intercity competition). Right now he her current boyfriend slash not-boyfriend. They hooked up from time to time (after a party that they kissed, she started receiving text from him, asking her to come over his place with take-out and they would end up in his couch, kissing the life out of each other) and if they were asked, they were just friends. Funny thing though: neither 'saw' other person since even before they started to be not-girlfriend and not-boyfriend.

"What?" She asked in surprise.

"There's none else here and I feel like sparring, and I remember that you are good at it." She blushed with the compliment. "Besides, I've always wanted to do it with you." She blushed even harder and Gray was sure that her mind went wild with his words, but he was too amused to correct her. Besides, he had meant it in both ways. He really wanted to spar with her. He had seen her fight body-to-body after his own fight with her and it was intense to say the least. He once saw her and Erza together; she didn't win, but he was surprised to know how much she lasted. And he wanted to do more with her too. Since they started hooking up, things were growing hotter and hotter between them.

"Come on." He went to the middle of the square. And Gray knew that she was struggling with herself, so he had an idea. "Let's make a bet." She perked her ears and stared at him with suspicion.

"A bet?" She stepped closer to him and he smirked; he had her.

"Yep." He said nonchalantly. "Whoever wins can ask whatever he" Juvia raised an eyebrow. "…or she," Gray granted. "Wants and the defeated has to do it, no matter what. But no illegal stuff, obviously."

Juvia was surprised. The last time Makarov did something like that, Gray was the first one to object and now he was offering himself to a bet with those terms? What was the catch?

"No matter what?" She narrowed her eyes and crossed her arms under her breasts, still suspicious.

"No matter what." Gray nodded. "I promise. Cross my heart and hope to die." He made a pattern of an 'x' on his chest, above his heart.

She thought for a moment. Juvia knew that if he won, Gray wouldn't make her do something bad or ridiculous. And neither would she. Actually, if she won, she could make him take her on a proper date. Kissing and petting each other on the sofa of his apartment without a real commitment was getting old. Maybe… Maybe that was what they needed.

Making up her mind, Juvia smiled and positioned herself for a fight and Gray immediately went on fight-mode too, overwhelmed with the excitement of sparring with her. He remembered fighting her three years before and both were so much better now. It was going to be exciting!

"Don't back out on your word, Gray-sama." She smiled and he laughed.

"I won't even break a sweat, Juvia. But I won't hold back either." Gray grinned.

"You better, otherwise you'll lose." They moved at the same time towards each other.

#

It was getting ridiculous. They were at it for about twenty minutes already, without taking a break. Both Gray and Juvia were sticky with sweat and panting like there wasn't enough air in the world for them to breath. She was quick and used it as an advantage, of course. For him, though, it was like trying to pick up soup with a fork. Of course, they weren't punching each other in the face like crazy, just having a little fun.

A little fun that was taking a teeny tiny bit longer than he expected.

"Okay, you are good." The man said, removing his hair from his forehead with the back of his hand, taking distance of her to breathe for a moment.

"Thank you." Juvia panted; her hair that was previously in a ponytail was with many parts out, her bangs glued to her forehead. "You are too."

"I know." He smirked and saw her eyes sparkle even more. "But it's getting late. Let's end this."

"Juvia thought that you were trying to end this for the last ten minutes." She teased him and Gray was in shock for a moment. "Without success, that is."

Juvia. Had. Teased. Him.

Even after all the time they've known each other it was the first time that she had done it and he felt warmth spread through his chest as how good it felt to have her like that, really speaking to him without much reserves. He liked the way it sounded.

It caught him so off guard that Gray didn't even see when Juvia went to the floor and make him fall, with her leg getting him from behind, so he fell with his back on the floor. Juvia stood up while Gray groaned in pain. The blue haired woman immediately felt guilty for doing that and walked over him.

"Gray-sama, are you ok…kya!" She shrieked when Gray did the same so she also fell, and he was not done.

He put each of his legs beside her hips, while he grabbed her hands and put them above her head, pinning Juvia on the floor; both panting hard. She struggled to get free, but Gray didn't let go; his weight on top of her.

"Almost got me." Gray said only loud enough for her to hear; and she realized that he had her, there was no way out; she had lost and stopped trying to get away.

"Gray-sama wins." Juvia said and felt his grip on her wrists and hips to be looser, but he didn't let go. Instead, he let his head fall so their foreheads and noses were touching. Feeling a little darer than she normally was, she raised her hips a bit to touch his in a very intimate way. "What Gray-sama wants as a prize?" She spoke in a low, sexy voice while he hissed in delight.

He didn't even fought the urge to kiss her, he just did. It felt so good; it always felt good. They were 'seeing' each other for the last three weeks and Gray couldn't recall a single time that kissing her wasn't the best thing in the world.

And this time, they were so raw. It was pure need and adrenaline that was driving them and it felt so amazing. His instincts were kicking in: he had fought for her, she was his. It was such a primary need, ancient, that his mind started to focus only on the body beneath his.

Oh, the possibilities that flew through his mind.

At that very moment, with the sounds she made and the way her body moved under his, she was willing to have him taking her, he was sure. They never went far enough to have sex, but they certainly had some hardcore make-out that left Gray in a bit of a predicament once she would leave his apartment.

But this bet… He had won it! He could ask her anything and she would have to do what he said. Truth be told: his mind was getting real kinky; since she was trapped under his body, sweaty and panting hard. Her cheeks were rosy, looking like she was having amazing and mind-blowing sex. Oh, man. She looked exactly like he thought she would. But well, better gather further data. Gray was about to put a hand under her top when the most unpleasant sound in the world echoed through the room.

"What the hell?" Natsu's voice came from the other side of the gymnasium. Gray groaned and broke the kiss, looking up from Juvia to the pink-haired man, while she tried to do the same. She noticed that the man above her didn't move; much to her delight.

"Go away, Natsu." Gray growled, trying to return and kiss Juvia again. Couldn't Natsu get a freaking hint? A couple of young adults on top of each other and looking like they were looking? Anyone would just go away and let them do their business.

"Everyone knows you two are dating, you don't need to come to the gymnasium in the middle of the night to have sex. Get a room." Natsu said and as if nothing happened, he started to go towards the weights. "You two want to screw each other, I don't mind. I'll use my iPod and turn around. I really don't care what you do. Lucy's pissed at me and banned from the apartment for the night. Go ahead. Don't mind me."

Gray sighed in defeat and let go of Juvia's wrists, rolling off of her, lying by her side. Now that the adrenaline was lowering, he was glad that Natsu had arrived; he didn't want his first time with Juvia to be on the ground of the Fairy Tail Gymnasium (he wouldn't be against later on, he was quite comfortable with being naked in public places), and he didn't want people around when it happen.

But he was so excited to be with her that part of his mind cursed Natsu to death for stopping them. Gray knew that Juvia had also lost herself in the moment.

"Natsu just have the worst timing ever." Juvia giggled with his words and turned to face him.

"Well, let Juvia know what you want as a prize, Gray-sama." She said and kissed his lips lightly before turning away; ready to get up to take a shower. She let her hair fall loose and Gray once again cursed Natsu's timing. If he hadn't appeared, he would've been the one to have the pleasure to let her hair loose. Yes, Gray had a thing for Juvia's hair, especially when he made it all messy because of a very hardcore make-out session.

"Oh, I know exactly what I want." Gray grinned, his face turned to the ceiling.

"What is it?" Juvia looked over her shoulder to him and he saw his dark eyes glowing with mischief.

"I'll tell you after dinner." Gray groaned and got up with a jump. Juvia would never get bored of seeing him do that. It was so hot. He held a hand to help her up.

"Dinner?" She asked, accepting his hand.

"I am hungry." He said and helped her up and once she was on her feet, they were very close to each other one more time.

"Like a date?" She asked, hopefully.

"Sure, why not?" Gray shrugged and Juvia was surprised. "What? It's like Natsu said: people already know that we're together. A meal will hardly change a thing. Besides, I never took you to a proper date."

"Wha…?" Juvia's head was spinning. Did that mean that Gray already saw her as his girlfriend? "We're together?" She managed to ask.

"Of course." Gray frowned. Wasn't it clear to her? Why else would they be kissing and touching each other like they've been doing? "Well, anyway… By all means, go take your shower."

Juvia was still dazed with the news that she was indeed dating the love of her life and she was oblivious to it! But before she stepped away, she asked. "And Gray-sama's prize? You did win."

Gray smirked and brushed her hair from her shoulder, leant closer to her ear and whispered exactly what he wanted as a prize. She shuddered when his hot breath teased her flesh.

At each word, Juvia's face became redder and hotter. By the time he was finished, she was sure that all of her blood had rushed to her cheeks and for once, it was him who was making her blush. He got used to her innuendos; in his mind, they were dating for three week already.

"Gray-sama!" Juvia exclaimed in shock. "That's…"

"The rule was that it wasn't supposed to be illegal. And it's not illegal." He shrugged and bent a little to kiss her, but before their lips touched, they heard:

"Really?" Natsu yelled. "Jesus, go find a closet or something."

Gray rolled his eyes and grabbed Juvia's hand, leading them towards the locker rooms. "Natsu, put your earplugs and do not go to the showers until I say so!"

"GROSS!" Natsu answered, but did as he was told.

"Gr-Gray-sama…?" Juvia asked and Gray chuckled. Did he mean to take his prize that night? Oh, she wanted him, but not at that moment! She was not ready to…

"Don't worry. I'm just messing with him." He said. "The bet doesn't have an expire date, has it?" She shook her head. "There. When you are ready, I'll collect it."

Juvia tip toed and kissed him lightly. "Thanks, Gray-sama." She went to the women's bathroom and Gray to the men's.

"At least I got to do one of the 'its' I wanted." Gray laughed.

#

AN: I don't care that Gray is OOC because he is freakin' hot in this. Thanks to his friendship with Loki, I guess.

This kind of contradicts the last chapter where Juvia just knew they were together, right? It's just that in the real world people hook up with one another so lightly these days that it is really hard to know if you are or not with a person.

And the "like trying to pick up soup with a fork" thing was quoted from Beelzebub 128, when Oga and Aoi fight. I have to admit that this was a little bit based on them and how they would get along when the kids, her grandpa and the Red Tails were not around. I think that Oga would like to have her in that situation.

Bus this is Gruvia week! So, Gruvia! Gray, Juvia, Gymnasium, hotness between the two of them and Natsu being Natsu.

Thanks to Uchiha Evangeline, WiseLoad43, Yukistar, Angelbaby5643, Bored Konoha Kunoichi, DoomedToBeACrazyFanGirlForever, Cat Goliath, otaku03, IHelen, Darkhope, superduperizee, PrincessChii, Chibi Waru-chan, blacknote12, XxPlueXx, Sarapyon, clara. Sims.92, cybercorpsesnake, Ushiio, Yachari-chanX3, Armaggedon Angel and Seru26 for taking time to review!

~ End of Day 03 :)