Hey there folks! I have some more Jonabelle for you here, however it's not continuing on from the previous chapter I did about them. This one is set in an alternate version of the story where Isabelle joined Team Evil with Sebastian instead of Clary and Jace. It sort of touches on relationship abuse but it's more about the BDSM.

As usual I must say all characters belong to Cassandra Clare!

Thanks for reading and make sure to leave me requests for pairings, you may have noticed I don't have much of a social life atm so I'm spending my time writing lemons XD So am grateful for new ideas. I should have a Clace up shortly!

His footsteps were approaching behind Isabelle as she stared down at the body of the faerie she had just killed. If she had been at home in New York this would have resulted in awful punishment and possibly even start a war between downworlders and shadowhunters, but here with Sebastian it was fun and she was free to do whatever she wanted and he wouldn't punish her for it... unless she wanted him to of course. He nudged himself against her body and wrapped his arms possessing manner around her, kissing her neck.

"Oh." He said flatly, his black eyes falling on the faerie for the first time. "Pity she's dead."

"Oh, sorry Sebastian, did you want her alive?" Isabelle asked worried, turning her head to look at him.

He smiled and continued to kiss her neck, his hands roaming her body. "Not as much as I want you right now." He murmured against her, and Isabelle smiled, tilting her chin up into the air and pulling her hair aside so Sebastian could leave more marks of his kisses across her collarbone.

"Why did you kill her, by the way?" He asked, his lips brushing against her as they parted.

"For fun," she shrugged. "There's hardly any demons to kill here."

Suddenly Sebastian pulled his lips from her, but his grip on her only tightened, nearly so hard that it was painful. "We don't kill demons, Izzy baby. We want to make an alliance with them."

He actually did look angry, he never got angry with her. Isabelle struggled against the restraint of his arms and turned to face him properly. "Then it's good that I killed a faerie instead, right?"

He was tense for a while longer, his jaw clenched, but then his face relaxed and he smiled, pulling her into him again. "It is."

"What are you doing?"

Izzy jumped, quickly shoving the photo she had bought with her of herself and Simon back into it's drawer and turning to face Sebastian. He had seen her fast actions though, and he was stalking closer to her, his face ablaze.

"Nothing." she assured him, reaching out her hands as if to restrain him but he just grabbed her wrists in his iron grip. When she winced from the pain of it he softened and kissed her knuckles gently, then still holding her hands he lowered them to their side.

"We tell each other everything, don't we?" He asked, his eyes sad now. His mood swings always baffled Isabelle but she would never complain, she was just glad to be with him, even if she missed her family and Simon sometimes. That was natural, wasn't it? Surely even Sebastian would miss someone if he was away from them for a long time? He would understand, Isabelle decided.

"Yes, we do." She said gently, and then she turned from him and pulled open the drawer, taking the photograph out and handing it to him.

He took it from her, but then all the softness was gone from his face again, his eyes looked like they might pop out of his head, the veins of his wrists pulsed out visibly. "Why do you have this?" He asked.

"I... I just wanted a memory of home, you know when I decided to join you I just thought a keepsake would be-"

Riiiip. He had torn the photograph in half, and then into quarters, and then into smaller pieces, littering the floor at their feet. Furiously, he darted a hand out to grab Isabelle's hair and he pulled her towards him.

"Didn't I say it was either me or them?" He hissed, "You chose me. You're mine. Do you have any other keepsakes?'

She had never seen him so angry before, it was almost terrifying but she knew he was just jealous, and she had been wrong to do what she did anyway so she deserved whatever punishment he would give her.

"No," she said truthfully, "Nothing else."

At that she had expected his grip to loosen, but he just yanked her hair harder and started pulling her from the room.

"Where are we going?" She gasped, wincing at the pain.

"You lied to me, Isabelle." He spat, dragging her down the stairs. "You need to be taught that with me, there is no lies. You're 100% loyal to me or you don't love me and I kill you right now."

"You wouldn't..." Isabelle said, only she was frightened now and the words wouldn't escape her lips, it was more like a ragged breath.

He was opening the door to a room Isabelle had never been in before, taking her down steps and into a room that could only be described of as a dungeon, it was cold and it looked like it was all made of stone, even the chairs at the far side of the room were like thrones of stone.

"Sebastian?" Isabelle asked, her voice trembling. "What is this?'

"Don't talk unless I say so, Isabelle." He snapped, and he dragged her over to some sort of contraption, it was like a metal square standing upright with chains hanging off of each corner.

Her breaths quickened, she was panicking now but Sebastian barely noticed, he held her up and then without him even having to move his hands the chains started to wrap themselves around her ankles and wrists.

"Sebastian..." she cried.

He retaliated quickly, he pulled on the chains and Isabelle felt like a ragdoll having it's pieces torn apart, she had never stretched her body so much. Sebastian moved to stand directly in front of her, his dark eyes menacing.

"I'm only doing this because I love you." He told her, and there was no trace of love whatsoever in his voice but he wouldn't say it if it wasn't true. "If we are to be happy you have to do whatever I ask, because you belong to me now, don't you?"

She opened her mouth to speak and he tugged on the chains again, she gasped at the shocking pull but then nodded her head to answer his question. He smiled then, and his eyes almost looked calm again.

"Now, I'm going to punish you, and then we're going to go back upstairs and be normal again, after this your disloyalty will be forgotten. Okay?"

She nodded.

"Okay." He said, and then he ripped the clothes off of her body with one swift motion. One of his skills had always been immense speed, so when he clipped small pegs onto Isabelle's nipples, hardened from the chill in the air, it was like they appeared out of thin air. It hurt, but she bit down on her lip until she could taste blood to keep from crying out, she didn't want him to pull the chains again. He circled around her for a while, smiling smugly as he watched her writhing silently in pain, like a vulture circling it's prey. She was so relieved to feel his hands gentle on her again, he rubbed his fingers around her ass, his touch like velvet. Just as she was about to exhale in pleasure, his hand came away and landed there again, only this time it wasn't gentle, it was a sudden, blindingly-painful spank.

"I love you so much." Spank. "I just wish you would trust me." Spank. "I wish I was enough for you."

She knew she was supposed to be silent but she hated the pain in his voice. "You are more than enough for me." She whispered.

However kind her words were though, they would not be tolerated. The chains were pulled again and she cried out in pain, and when she cried out in pain he started to hit her harder and faster, alternating between cheeks. She couldn't see but she was pretty certain by now the flesh there would be red raw, his hands were so strong, and she wished he would be massaging her clit like he did to relax her, as opposed to whacking her ass, but at least he was still with her. He could have killed her or sent her away.

When he at last stopped he moved to stand in front of her again, and he met Isabelle's pain filled eyes.

"I don't want to hurt you." He told her, and she believed him, she could see conflict all over his face.

It's over now, she thought to herself, but she was wrong.

She hadn't even seen him get it, but suddenly Sebastian was holding a stick that was hanging with leathery looking tassels. He whacked it against the skin of her pussy, and the pain stung from her pussy to her toes, and only when she was recovering from the first whip he did it again, and again and again and again until she couldn't keep quiet anymore, screams escaped her throat before she could stop them. The whole time he was beating her he looked into his eyes, mouthing, "I'm sorry, I'm sorry."

Soon the pain was too much, and she passed out.

The next thing she was aware of was being carried back to bed by her love, and he was saying how much he loved her.

"I'm sorry I did that." He whispered. "Maybe now you'll learn."

"I have learnt." She said, her voice cracked. "I love you."