I got inspired by tumblr user alyxovert's prompt : 'I'm not jealous, I'm curious.'

I'm sorry for the mistakes, English is not my native language. I hope you like it.

Disclaimer : Fairy Tail belongs to Hiro Mashima.

I'm Not Jealous, I'm Curious

Natsu looked at his plate thoughtfully. He had no appetite. He was sitting at a table at the guild and as always all of its members were cheerful and the atmosphere was very lively. But unlike usual, Natsu had no desire to join them.

Earlier, he had asked Lucy to have lunch with him, but she had refused. When she explained to him why, she was very evasive, telling him that she had something to do, without telling him what it was. He had found her attitude strange. He sighed and stood up. There was no point in staying there. Lucy was not there and Happy had decided to spend the day with Carla.

He walked in the streets of Magnolia without knowing where to go. He was bored and he was hoping he could find something fun to do. Suddenly he saw Lucy in the distance coming out of a restaurant. He was about to call her and he raised his arm to inform her of his presence, when he saw that Gray was with her. Natsu lowered his arm and frowned. What were they doing together ? Did they just have lunch at this restaurant ? They walked away into the crowd and Natsu lost sight of them. He took a deep breath, searching for Lucy's scent, but it was impossible. There were too many people.

For the rest of the day, Natsu could not get the thought of Gray and Lucy out of his head. So that was why Lucy had refused to have lunch with him. Because she was having lunch with Gray. But why did she hide it from him ? He knew they were friends, he would have understood. Unless…

His hands clenched. This idea was unbearable to him. What if they were more than friends ? Come to think of it, Gray and Lucy had been strange for a few days. They spent a lot of time together, whispering together and were very secretive. Natsu shook his head. No, it was impossible. Gray was in love with Juvia. He could never cheat on her with Lucy. And yet, that thought replayed in his head over and over.

It was impossible for him to sleep that night. The thought of Lucy and Gray possibly being in a relationship make him sick. The next day, Natsu decided to observe their behavior. They were sitting at a table at the guild and after a while Gray stood up to join Juvia who had just arrived. Did she know about their little game, Natsu wondered. Probably not. A shiver ran down his spine as he imagined the reaction she might have.

Once he was sure Gray and Juvia were far enough apart from her, Natsu walked over to Lucy. She looked up at him and smiled. He loved that smile. It was a smile she had only for him. Natsu shook his head, thinking about what he wanted to ask her.

'Hi Natsu,' Lucy said happily.

'What's going on with you and Gray ?'

Lucy opened her eyes wide. He had perhaps been a little too abrupt, but he had to know.

'What do you mean ?'

'I saw you coming out of a restaurant with Gray.'

Lucy grimaced slightly.

'I hope Juvia doesn't know anything'

Natsu felt like his heart was breaking into a million pieces. So he was right. His hands clenched and his breath hitched.

'You two have an affair, haven't you ?'

Lucy had never been so offended and outraged at the same time.

'Are you crazy !' She said. 'Why do you say that ?'

'You both are acting weird and you keep little secrets for some time.'

Lucy looked at him suspiciously.

'Are you jealous ?'

Natsu turned bright red. Of course he was jealous. Lucy had to be with him. Not with Gray or anyone else. But he was too proud to tell her.

'I'm not jealous, I'm curious.'

Lucy smiled.

'Sit down. I will tell you everything. But you have to promise me not to tell anyone, especially not to Juvia.'

Natsu nodded and sat down across from Lucy. She leaned towards him, as if she was going to tell him a secret.

'Gray is going to propose to Juvia.'

'What ?!' Natsu shouted.

Lucy quickly put her hand over his mouth, forcing him to shut up. She looked around, but luckily no one was paying attention to them. She sighed in relief and glared at him.

'Natsu,' she reprimanded him.

'Sorry,' he said as he rubbed the back of his head.

Lucy continued her explanation.

'I bumped into Gray in a jewelry store when he was picking out a ring. I agreed to help him and to thank me, he invited me to lunch.'

Natsu felt the weight on his chest disappear.

'So Gray is going to ask Juvia to marry him.'

Lucy nodded.

'That's why you mustn't tell anyone. Gray is going to propose tonight.'

A huge smile lit up Natsu's face.

'That means there's nothing between Gray and you.'

He approached Lucy and whispered in her ear.

'So much the better. I couldn't stand it if you were with anyone other than me.'

No one but him will have Lucy's heart, just like no one but Lucy will have his heart. Lucy blushed. Natsu was jealous and he was not afraid to admit it to her anymore.

The end