I growled as I watched over Clarissa like a hawk. Jace was kissing her, and comforting her. She was my mate, not his.

I tried not to jump down from the tree where I was standing to grab her and mark her as mine with my blood. She belonged to me, and no one else could have her.

Jace looked up at the tree that I was in and gasped when he caught my eyes looking at him. I jumped down from the tree and Jace pushed Clarissa behind him. She stared at me and gasped.

I kicked Jace and pinned him down. I growled loudly and he tried to get up. I kicked him in the ribs and satisfyingly heard them crack. He tried to get up and started to cough blood. I smiled menacingly and Clarissa tried to push me off of him.

"Please stop! I'll go with you if you just let him go, I'll do anything if you don't hurt him!" She caught my attention with that. I looked up at her and smirked.

"Clary, don't," Jace begged silently from where he was on the ground under me.

"I have to do this for you," She said while tears slowly streamed down her cheeks. I kicked Jace in the jaw and he passed out, he was so weak. He actually thought he killed me before, but my demon blood saved me. I grabbed Clarissa dragged her with me.

"You didn't have to hurt him, I would have gone with you anyways," Clarissa said smiling at me sexily. I knew she was trying to play with me so I threw her over my shoulder. Father would be happy that I had gotten her.

"Spare me the lies Clarissa," I said putting her into my arms before I let her down. She started to punch my chest repeatedly and I sighed and lifted her up bridal style. She finally stopped trying to hurt me and she gave up.

"Why do you want me?" She asked silently. I looked down at her and she looked up at me innocently.

"You are mine. From now on, if you say his name ever again I will whip you," I said ignoring her question; she didn't need to know that I would never be able to raise me hand on her. I loved her so much.

"Jace will come and get me!" She spat at me. I covered her mouth.

"If he so much as tries I'll kill him the first chance I get, you are mine Clarissa, only mine." I growled at her. I would never let anyone take her away from me. She turned her face away. "Look at me," I said gently. She kept her head turned from mine "Look at me now Clarissa," I said gently again.

"Fine," She said staring at me with her striking green eyes, another trait she had gotten from our mother.

"I love you," I said looking straight at her. She started to chew her lip; she didn't know how much I wanted to mount her right now.

"You're such a liar!" She screamed at me. Clarissa hid her face from me again. I pulled her to me and she just buried her head into my chest. She looked so adorable.

"I am not lying Clarissa," I said pulling her face away from me. I kissed her hard on the mouth. She made a little gasp like usual and I thought about the last time I kissed her.

She tried to shift away but I held her close to me. She started to kiss me back and put her arms around my neck. I loved doing this to her. I wanted to claim her right now.

"Stop it! You're my brother, you shouldn't touch me at all," She growled out to me. I ignored her and lifted her up. I kissed her again and she didn't fight me this time. Clarissa put her legs around my waist and I held her close to me.

"We shouldn't do this," She said trying to push me away. I held her to me and kissed her neck, she moaned and I loved the sound of it. She started to unbutton my shirt and I threw off hers.

Clarissa started to explore my chest and I kissed down her neck. I tore off her bra and she gasped when the cold air hit her naked chest. She tried to cover up her body.

"Don't hide from me Clarissa," I said taking one of her pert nipples into my mouth. She moaned when I started to pinch the other. She rubbed against my manhood through my pants and I groaned.

"Why do you love me?" she asked quietly. She pushed me away from her and I looked up at her.

"Clarissa…" I trailed on she looked at me with innocent eyes.

"Don't call me Clarissa. it makes me think of Valentine!" She said looking at me again.

"Ok, Clary…you're my mate." I said looking at her. She looked at me like I was crazy for a second. She tried to get out of my arms.

"What the hell is a mate?" She asked loudly. I sighed.

"I'm half demon, you already know that. It means that you are the love of my life." I said while she looked at me in shock.

"Love of your life?" She said looking at me in horror. "You're my brother! That is so wrong," She said shaking her head and trying to push me away. I didn't let her out of my arms.

"Trust me Clary, you are the only person that I will ever love in my entire life," I said kissing her again, why couldn't she understand that.

"That's just gross Jonathan," She said looking at me disgustedly. I let go of her and threw her shirt at her. She looked at her torn bra on the ground and sighed before putting her shirt on. You could see her nipples through her shirt.

I grabbed my shirt and buttoned it back up. She tried to run away after I was done and I threw her over my shoulder again.

"Let me down!" She screamed hitting my ass. I just chuckled and took her to Valentine's hideout in Alicante, no one would be able to find her if she was with me.

"Where are we?" She yelled when I finally let her down, she tried to hit me and I held her arms so she couldn't move them. Clary looked angry.

"We are at Valentine's hideout," She looked at me like I was crazy.

"Why are we here? Valentine is a creep!" She yelled staring at me.

"Valentine is dead." I said shrugging. I pulled her inside with me.

"Don't touch me," She growled out to me when I put her down.

"Don't make me hurt you," I replied emotionlessly. I kept my arms around her.

"I'll take you to your room," I said dragging her with me. She was scared, I knew that much. When I got to her room I put her on the bed and started to peel off her clothing.

"What the hell are you doing?" She yelled pushing me away. I clutched onto her to keep her from moving and took off all of her clothing.

"I'm going to claim you," I explained silently. I threw off my shirt and pants and kissed her harshly on the lips. My hands went straight to her breasts and she moaned as I squeezed them gently.

"Stop, we shouldn't do this you're my brother," she said pathetically. She obviously didn't want to stop because she put her arms around my neck and slid her legs around my waist.

"I don't think your body wants to do that, Clarissa." I said into her ear. She shuddered and let me explore her body. My canines were sharper than regular humans and I wanted her to be mine forever.

"Please," She begged when I started to rub her clit softly. I didn't know what she was asking for but I rubbed her clit harder. Clarissa tried to push me away but I engulfed her lips with mine. She moaned sweetly and I pulled my hand away from her core.

I aligned myself to her core and thrust in slowly. Clarissa screamed silently and buried her face into my chest. I could feel the tears against my skin.

I pulled out and thrust in again after she stopped whimpering. I needed to be inside her, she was so tight around me. I growled as I pounded into her. I bit her hard on the neck and consumed some of her blood. I cut my wrist with my teeth and held it to her mouth. She swallowed a few mouthfuls before I came inside her.

"Why did you give me your blood?" She asked after I pulled out of her. I lied down next to her and covered us both with the sheets.

"I claimed you; any demon that messes with you will know that you are mine." I explained kissing her neck. I sucked on it nicely and gave her a dark red mark.

"You're still my brother, and it's wrong to be in love with your brother." Clarissa said stubbornly.

"You didn't care when you thought Jace was your brother." I growled out to her. She looked at me with pain in her eyes and I knew that I went too far.

"You took me away from Jace," She said silently. I wished that I hadn't said anything about him. I didn't want to see Clarissa upset.

"I'm sorry, but I love you, even though you are my sister," I said pulling her close to my body. She nuzzled into my chest and put her arms on me.

"I'll never love you," was all that Clarissa responded. I sighed and kept my arms around her. I had to get up and check something. Clarissa began to realize that I was about to leave.

"Don't leave me here alone," She cried to me pulling me closer to her.

"Shh, Clarissa; I'll come back soon, ok." I said rubbing her back in between her shoulder blades.

"No, please don't leave." She begged looking up at me while tears streamed down her lovely face.

"I won't, don't worry." I said pulling her back to my body. My hand went down to her core and I plunged two fingers into her warmth. She gasped in surprise and held onto my hair. I continued to thrust my fingers into her and her eyes and mouth widened when she came on my fingers. Clarissa closed her eyes and let me pleasure her.

I rubbed her clit with my thumb and lowered my face to her entrance. I thrust my tongue into her and she gasped loudly. She clutched onto my hair harder and scratched the surface of my head as I tongued her.

"Oh god, keep going!" She yelled pulling harder on my hair. I continued to pleasure her with my tongue and she whimpered softly and came quickly. I lapped up her juices and pulled away before giving her a harsh kiss on the lips.

I gave her no warning before thrusting into her core. She screamed out in pain and I silenced her with a kiss. I stayed still inside of her until she started to squirm a little.

I pulled out slowly and thrust into her once again. She let out a gasping breath and I thrust into her one more time.

"Stop." She moaned out unconvincingly. It felt so right to be inside of her. I wanted to fuck her forever.

By the angel, she was tight.

Clarissa was very beautiful when she writhed in pleasure under me. I kissed her roughly and thrust into her once more. She screamed out in pleasure and with one more thrust I released my seed inside of her. She collapsed onto the bed and sighed.

I knew she was getting pleasure from this. I pulled out of her and plunged my tongue into her mouth. Clary moaned softly and I bit her neck softly.

She closed her eyes and fell asleep in my arms.

Damn she's gorgeous.

New Story! Sexy time with Jonathan, huh? I've always wanted to make a story that's completely just dirty and sexy. Please review!