And here is the 3rd chapter! Enjoy!

Few minutes earlier.

Natsu was done with the job and decided that he should visit Lucy before it got too late. Maybe he'd even stay over, wouldn't be the first time. Happy decided to spend more time with Charle at the guild so he would meet him later either at Lucy's or their place.
„Man that job was so lame. I hoped for a bit more action. Wendy could have told me that the job was to catch some run away animals. But it was fun I guess."
"…NATSUU!"

Natsu halted.
"Lucy?" *Was that Lucy's voice? I hope she's not in danger. I have to hurry.*
Natsu run as fast as he could toward Lucy's apartment. *Luckily the window is open* He climbed up the tree in front of the window but wasn't able to see anyone inside, not even Lucy. *I could use some action.* He grinned hoping for a fight but as he entered Lucy's apartment t, his eyes winded. The smell that was driving him so crazy was stronger than ever. His eyes started to cloud and his primal side was showing. Natsu looked down at the bed with the messy sheets. He sensed that the smell was stronger around the bed. As he started sniffing the sheets, he didn't notice Lucy entering the room. He was too occupied with the intoxicating smell. *What's happening to me? I can't get enough. Where is the source of this smell?* Just then he noticed something at the corner of the bed, which was glistering a bit. He reached immediately after Lucy's panties and sniffed it. *The smell is a lot stronger here.* Just smelling didn't satisfy him anymore. He darted his tongue out to taste the wet substance. This made his lust only grow. The flavor was so rich and he needed more.

"Natsu…"
Upon hearing the voice of his team mate he instantly focused his gaze on her. There she stood, in her tight top and revealing skirt, covered in sweat. She looked scared but also something different. The other thing he noticed was that she was the source of the smell. *I need more…* Without thinking of his action Natsu stood up and creeped over to Lucy.

"Natsu please…"
As he reached her, he slammed her against the bathroom door.
"Ah! Natsu!"
He couldn't hear her, too lost in his current state. As he fully pressed himself against her, Lucy was able to feel every muscle on his body, especially the one between his legs. *Natsu…he is aroused!*She couldn't help herself and let out a moan. His grip only tightened around her wrists.
"Ah Natsu, you are hurting me."
Still no reaction. He then lowered his head to the crook of her neck and inhaled deeply.
"Lucy…"
His voice sounded so different. Lower and filled with something. Lust maybe? Lucy didn't know what to do. The whole situation was scary but arousing at the same time. *Even if I tried to fight back, I probably wouldn't be able to do anything. But why is he acting this way.*

Lucy's smell was good but he needed more. He started shaking a bit because it was so hard to control himself. His primal side just wanted to claim Lucy as his right here and now against the door but the little part of Natsu which was left fought against it. She was still his dear friend and partner.
But he really wanted to find out where the smell is the strongest; he started to lower his head. Soon he reached her mounds, trailing his tongue between them.
"Natsuu…" Lucy started to wiggle under him, trying to ease the throbbing between her legs. This only aroused Natsu more. Her voice sounded like a beautiful melody to him, her wiggling only caused her to rub more against him and the smell was getting stronger. He kept on following the path with his tongue. He decided to place his hands on her hips now. The grip was tight so she wouldn't be able to escape if she tried to. There is no running away.

Having her hands free again, Lucy tried to push Natsu away from her.
"Natsu please…stop." Was she really pleading for him to stop or maybe for something else? She wasn't sure herself.*What are you doing to me Natsu?*
"Natsu listen we shouldn't be doing this. We are nakama. We…AHH!"
Lucy wasn't able to finish her sentence because Natsu pressed his nose against the source of the smell and inhaled deeply. Even though it was only over the skirt it was so intense.
*This is it. Here the smell is the strongest.*
Natsu tried to push her skirt with his thumbs up, still keeping a steady grip on her hips. Lucy's eyes winded again. *No! I don't have any panties on!* But it was already too late for that.
Natsu managed to expose Lucy's lower parts fully to him. As he saw the glistering source, dripping with juices, he couldn't control himself anymore. Natsu dove straight in.
"AHHH NATSUU!"

His grip lowered to her butt cheeks so could press her more against his hungry mouth. She was delicious. Somehow he managed to place himself between her legs, so that her legs were now over his shoulders. He leaped hungrily at the juices. It felt like he was eating her out. *Is his tongue supposed to be this long and flexible?* Lucy couldn't take this anymore. She had her hands in his hair, gripping it for support. "Natsu I'm…" She didn't manage to finish her sentence as the intense orgasm shook her. Her head flew back and her eyes rolled upwards. Her orgasm only caused more delicious juices to be served to the dragon slayer. He let out a loud groan while leaping every single drop up. The space in his pants was getting tighter. As he felt her getting limp he looked up. She looked like a beautiful, hot mess. At this point he knew he's going to make her his, forever. As he lowered her against the door to sit down, she tried to look at him again. He still had this hungry look in his eyes. He was like a beast. It only made her shiver. Abruptly he leaned forward and kissed her. Lucy's eyes winded again. The kiss wasn't sweet at all. It was full with passion and dominance. Somehow he managed to enter her mouth with his tongue. Lucy could taste herself, which made the kiss even more lewd. She was too weak to fight back but in the end she didn't even want to. She felt like in trance. *Is this really Natsu? But why is he acting this way?*

Just as Natsu was about to free Lucy from her clothing they heard hammering at the door.
"LUCY! Are you okay? Open the door or we'll open it by force?"
"Erza?"
As Lucy was distracted with the noise coming from the other side of the door she didn't notice Natsu disappearing, just like her panties.
"Natsu?"
Suddenly the door broke and you could see Erza, Juvia, Cana and Levy standing there. Levi immediately run over to Lucy helping her up.
"Lucy-san what happened? Are you okay? We heard some noises but no one answered us. We thought you are in danger."
"I'm fine but why are you all here?"
"Don't you remember? You invited us for a sleepover. Wendy and Charle will join us later, too. But what happened to you? You look like a mess."
Ah right the sleepover. Lucy blushed madly as she thought about everything what happened a few minutes ago.

"HE DID WHAT?"
"Shh Cana, no need to be so loud."
"How do you expect me to be quiet when something like that happened, Lucy?"
Lucy could understand her friend. She also wouldn't believe it if she didn't see it with her own eyes.
"But didn't you try to talk to him Lu-chan?"
"Well I kind of tried to, but like I said he wasn't acting the way he usually did. Like a totally different Natsu. Like an…animal."
"Lucky you, Lucy, hehe."
"Cana!"
"Aw come on, you can't tell me you didn't enjoy it."
"I knew it!"

At this point the doorbell ringed. Lucy stood up and opened the door.
"Ah Wendy and Charle. We were waiting for you. Come in."
"Thank you Lucy-san."
"Maybe Wendy knows something about the weird behavior. Maybe it's some sort of dragon slayer thing."
Wendy looked confused at Erza.
"What do you mean, Erza-sama?
After explaining the situation to Wendy she almost fainted at how embarrassed she was.

"So do you know anything about that Wendy-chan?"
"Well…I don't know much but it could be mating season."
"Mating season?" Everyone wondered aloud.
"I don't know much about it myself, but Grandine told me, that at some point dragon slayers start searching for their mates. After they reach the point where the mating season affects them, they will have this urge every year. But it only gets really strong when they finally find the person they believe is going to be a perfect match. When this happens they will do everything just to mate with their partner. At least that's how Grandine described it to me. I guess Natsu thinks you are his mate Lucy."
"But how can this be? Why now?"
"Hehe probably because you let your hormones go wild, Lucy. See I told you the guys love it. By the way, Levy did you notice any changes around Gajeel?"
"W-why would you ask me that Cana? How am I supposed to know? Also he went to train with lily in the mountains so I don't know."
"I think I know why, hehe."
First Levy didn't understand what Cana meant but the longer she thought about it the redder she got.
"You think it's because of…me?"
"Of course it's because of you, silly. Who wouldn't want to tap that, haha. Juvia is there any progress between you and Gray?"
"J-Juvia thinks so. Gray-sama is spending a lot more time around Juvia lately. Juvia also thinks that he is always trying to get some physical contact with Juvia."
"Perfect! Oh and Erza when are you going to see Jellal again? I bet he would love to see some new tactics you learned there." Cana winked at Erza which made her blush.

What the other girls didn't know is that earlier that day Cana actually met Erza in the BDSM section of the shop where she got the presents from. It seems like Erza was really getting into it.
"Ne Lu-chan, what are you going to do now? You know he won't stop till he gets what he wants."
"I don't know Levy-chan. Maybe I should keep avoiding Natsu till this phase is over. I should probably stay at home and not go to the guild for some time."
"The guild is not the same without you Lucy. Don't worry we'll protect you, so you can come to the guild anytime."
"Thank you, Erza."
*I wonder what Natsu is doing right now.*

There were no lights at Natsu's place. Happy was still at the guild. The only thing you could notice was faint moaning coming out of Natsu's room.
"Lucy…Lucy…"
Natsu was lying on his bed covered in sweat. In one hand he had Lucy's stolen panties and was stroking himself with the other one. He couldn't get enough of the smell. He held Lucy's panties to his nose and inhaled the lovely fragrance. His stroking pace increased, he was so close.
"Damn it Luce…I'm gonna…"
Just before he came he covered his member with Lucy's panties, giving himself the final strokes. Now the panties were also covered in his juices and he liked the way his and Lucy's smell combined. *So good. I need more. I need her. I need Lucy. And I will have her. She can't run away from me forever.*

Natsu was about to get up and go over to Lucy again but then Happy came in flying.
"Natsu why are you so sweaty? Are you sick?"
"No I'm fine Happy, don't worry. Why are you already here, didn't you want to spend more time with Charle at the guild?"
"I did but Charle and Wendy went over to Lucy. They are having a sleepover."
*Damn it. Erza and the rest are probably also there.*
"Natsu what do you have in your hand?"
Natsu looked at his hand and didn't realize that he was still holding Lucy's panties. He blushed that his best friend saw them and tried to come up with an excuse.
"Oh I wanted to play ninja again, so I lend this from Lucy."
"Natsu you meanie, why didn't you get me also some?"
"Sorry buddy, I forgot. But we should go to bed now. I feel kind of tired. The running today at the job was more tiring that I thought."
Natsu noticed Happy's suspicious look. He knew that Natsu wasn't that easily tired, especially not after such a lame mission.
"Also if you go earlier to bed you will see Charle sooner, right?"
That seemed to do the trick.
"Aye! Good night, Natsu."
"Night, Happy."
*The sooner I fall asleep the faster I can go and get Lucy.*

Suddenly Lucy felt a shudder run down her back.
"What's the matter Lu-chan?"
"Ah nothing. Sleep well everyone."
"Good night."
*Somehow I have a bad feeling.*

Well this is it for now. :D I hope you enjoyed it and that you leave me some reviews. I really enjoy reading them and thanks to everyone.
If you have tips how to improve, than pls give them to me. xD
I think it will take max. 2 more chapters to end this story.
If anyone has some suggestions or ideas I could write about, feel free to pm me. :)
Till next time!