Disclaimer: I do not own The Mortal Instruments Series, and I do not make any money from these writings.

Author note: Precursor warning, I HAVE NOT READ "CITY OF ASHES" OR "CITY OF GLASS"! After having said that, I would like to state that I think that all of my references are correct. If I misquoted something or something is factually incorrect, just let me know and I will try to fix it. I don't really care where in the timeline of the series that this falls so pick for yourself if you have a preference. I didn't really think that the timeline was important (this could be because I have only read the first book). Also, I appreciate any reviews that I get, except flames. I only appreciate constructive criticism. So, if you notice a spelling error or something else, let me know and I will fix it. I hope you enjoy the story and please, please, please review!

'Wrong' she thought as he claimed her mouth in a powerful kiss.

'This is wrong' she thought as his hands slid under her shirt.

'We have to stop.' She thought. But they didn't stop. They never did. The guilt ate at Clary. Jace was her brother. They shouldn't be doing this. And yet, while Clary knew that touching Jace was wrong, it felt so right.

'Maybe it doesn't count.' Clary thought desperately as Jace's kisses descended past her stomach. 'Maybe it only counts if you grew up with that person, and we didn't. We fell in love before we knew we were siblings.

Jace's mouth teased her relentlessly. Clary threw her head back and moaned as Jace touched her in places that a brother should never touch.

She had tried to stay away from him. Honestly, she had. They had agreed to only be siblings. Then they had allowed themselves to grow comfortable around each other again. They had trusted themselves to control their instincts. But they couldn't. It started slowly. The touches got longer, suddenly they started to cuddle against each other, and then came the kisses. Those burning kisses.

When Clary had regained her senses after the first time, she had burst into tears and fled the room. Clary had avoided Jace for a week after that. It had been miserable. Her waking thoughts were haunted by the ramifications of their actions and her dreams were plagued with fantasies of him. After that week, Jace had hunted her down. He was furious for her avoidance. He had come to rely on her company. He needed her around. Being without her hurt him.

Once again, they had promised to act as siblings should. Once again, that promise was broken. He was in her blood now, as she was in his. Every time they brushed against each other, she would remember how it felt when he really touched her. Every time he came close, the fire burned away at her until she was left raw and aching, weak for wanting his touches.

All it took was one wrong look, and they were caught in each other's eyes, unable and unwilling to pull away. They gave into their desires again. That was how it always started. In the beginning, they swore that they would never touch each other again after every single time. As time wore on, they stopped lying to themselves. They knew they would never stop. They couldn't. They needed each other more than anything else.

Every time they coupled Clary would lament how wrong it was. And every time they coupled, eventually, the wrongness would fade away and Clary would be left to feel Jace and the power of the bond between them. Then she would cry because she couldn't understand how something so beautiful could be so wrong.

Remember that reviews help me make bad stories better, so, even if you don't like, please review! --LunarEclipse/librianangel