Here's more Sizzy for you! Sizzy is one of my favourite ships but I think they're so unbelievably adorable so I find it hard to do any kind of dominating and things that aren't really fluffy which I did consider doing for this, but I think BDSM sort of stuff works more with Isabelle and Sebastian… so here's some fluff. I'll have all the TMI guys banging Clary up for you shortly though… ;)

All characters belong to Cassandra Clare

Simon lay sprawled across their bed when Isabelle walked into the bedroom, his hair in a tangled mess, his shirt off. She loved watching him sleep, loved how relaxed his face always looked when he could escape the real world for a while. Stripping down to her underwear she crawled onto the bed beside him, not wanting to wake him by tugging the duvet out from under him so making do with a blanket. As she bent over Simon to reach for the lamp switch, he turned to look at her suddenly, his eyes bleary with sleep.

"Hey," he mumbled sleepily.

Isabelle sat back and smiled at him, running a hand quickly through his curls. "Hi. I didn't want to wake you."

"I'm glad you did," He whispered. "I'm horny as fuck."

Isabelle laughed loudly, "How romantic."

He grinned goofily and looked at her, his eyes tracing over her unclothed body. Keeping his eyes on her he moved his hand to her exposed chest and drew a light pattern with his finger on the skin there, something he knew she liked.

"Come on…" he pleaded, inclining his head towards her.

She smiled a little and closed her hand over his, still at her chest. "You don't even have to ask twice Simon, you know that." She said in a voice dripping with seduction.

She rolled over and hoisted herself up to sit on his waist, rubbing her hands all over his shirtless body. Leaning forwards, she kissed his chest with her eyes on his, trailing her lips down to the waistline of his lounge pants, teasing with her tongue, before making her way back up.

"Oh come on, little Simy needs to be sucked now…"

Isabelle spluttered, sitting upright for a second. "Did you just call your cock little Simy?"

Proudly, he grinned and reached up to pull her back down. "You shouldn't call it little Simy ever again."

"Oh yeah? What shall I call it?"

She thought for a moment, kissing the area around his bellybutton as she did so. "Dora the explorer." She said after a while, smirking at him.

It was Simon's turn to laugh, "You seriously want my cock to be Dora the explorer?"

She nodded, "As long as my pussy is the only thing Dora explores."

"This is the weirdest sex talk ever." Simon muttered, "What should we call your pussy then?"

Isabelle finally started feeling his cock, kneading it through his pants gently. "Yeah, well 'I wanna jizz on your tits' was getting kind of old." She said idly, teasing him further by pulling his pants down so slowly it was almost agonizing. "I named Dora, you name my pussy."

"Can't we just fuck now?" Simon begged, still smiling at her.

"Not until you come up with a good enough name. You better not just say vajayjay." As she pulled his pants further, her nails slid along his balls ever so slowly, and just her touch made him need her even more.

"Honey pot?" he suggested hopefully.

"Crap." she scoffed, finally getting his pants over his feet and then moving back to hover with her lips just by Dora the explorer, poking her tongue out so it very nearly touched his erect cock but then she bought it right back in, her fingers sliding to touch it just for a split second…

"You're driving me crazy." He sighed heavily, and Isabelle chuckled, letting a drop of spit wet his dick, only a tiny tiny bit.

"Hungry Harry?"

Fuck no, Isabelle thought, but he looked so desperate…

Wordlessly, she finally lowered her head, her tongue gradually poked the end of his cock and then she bent her head more, her lips opened wider and she started to suck his dick slowly, looking at him through her eyelashes and a curtain of hair. Escaped sighs of relief were the only noise Simon was making, his head reared up against his pillow. She was teasing, taking her time with each stroke of her tongue, and then she moved away from his cock completely and started sending kisses up his inner thighs, kneading the skin there.

"You're killing me." Simon moaned, and Isabelle just smiled as she finally went back to Dora the explorer. Her tongue moved in a figure of eight motion on his left ball, and then she moved to the other one. Licking back up his shaft she watched him as he enjoyed the pleasure, his lips mouthing her name, struggling to function enough to actually say the word. She was making him go crazy, almost being able to come but she was being so teasing and slow…

Gradually, she once again opened her mouth wide and started to suck his cock up and down, feeling it go rock hard at the back of her throat as she went down on him. No more making him wait, she sped up so that her tits jiggled and she thought she would choke.

"I'm going to come," he suddenly groaned, and Isabelle smiled, moving away from him and freeing his cock from her mouth.

She was just about to get some towels to wipe up his mess when he was suddenly on his knees, jerking his dick with his hand and then in an almost perfect arc his cum landed in a tangy splash across her face, some at the corner of her lips.

"You know I hate facials," she pouted, but she dabbed her tongue at the cum and then licked it with a hungry look in her eyes. "Clean me up, baby."

He grinned and lowered his head towards her, and then his tongue was covering her cheeks and her lips and her chin, he was sucking his own cum off of her face to her delight, she loved the feel of his tongue on her. She preferred it in her but…

"I'm tired." She sighed, yawning with over exaggeration.

She crawled over to the edge of the bed, turned the lamp off, and then leant against Simon.

"Simon?"

"Yeah?"

"If you ever call my vagina Hungry Harry I will personally rip your ball sack off."