She came out of her room with a little trepidation. She was wearing her "third date outfit", which unlike the way it sounded, left a lot more to the imagination than one would presume. It was a short black halter neck cocktail dress, and by short it really just meant that it came to one inch above her knees. She believed it showed just the right amount of skin. It wasn't demure, but it wasn't slutty either. She teamed it with her black suede sling backs and an emerald green shawl, hair up and minimal make up.

It was an outfit she'd developed over the years, practical for its purpose. It was easy to take off quickly, her hair up all night added a little extra excitement when, at the right moment, she removed the large clip keeping it up and her auburn waves tumbled free down her shoulders. No jewellery meant no unnecessary fiddling around, and minimal make up meant she wouldn't wake up the next morning with half her face smeared on the pillow. She grabbed her "sleepover kit" containing a travel sized toothbrush, a moisturising towellette, condoms and a miniature perfume.

Normally she would bring a man home, finding it a little safer than going to his place, but with her two cousins staying over at the moment, there was no way in hell she would let Jack spend the night. She'd already spent half an hour in the shower wondering it she shouldn't put tonight off until Sam and Dean left. But she decided against it, rationalising that she had nothing to hide and she would not pretend to be someone she wasn't. It's not like they live like monks either, she thought to herself.

The boys were watching the evening news while eating pizza and making quick work of a six pack they'd bought on the way back from town earlier. They looked up at her as her heels made contact with the floor boards. Dean's eyes widened in surprise, before he nodded in appreciation, she noted as a disturbing afterthought. Sam smiled at her, in that way of his as he looked her up and down.

"You look great" He said.

"You think?" She said twirling for them.

"I'd do you" Dean supplied casually. Both Sam and Isabel turned to him, a disturbed look mimicked on both their faces "If we weren't related" He added.

"You'd do anything with a pulse" Isabel snapped back sarcastically before frowning "But thanks for the compliment…I think"

"Where is he taking you?" Sam asked turning on the couch so that he faced her completely. Dean was looking back at the TV again.

"I don't know, somewhere for dinner, I guess. Maybe a few drinks" She shrugged and wondered to herself where they could actually go "You know, it's a Saturday night, you guys should go do something"

"What time will you be back?" Sam asked and she cringed inwardly. How to tell him she wasn't coming back tonight?

"I don't know, but you shouldn't wait up anyway" She said vaguely waving her arm dismissively and heading to the kitchen "I'll take the spare key"

Sam turned around to Dean, to find his pointed expression mirrored in his brother. They knew what she meant. Sam stood up and followed her into the kitchen.

"You're staying over a Jack's?" He asked, watching her closely as she removed her cell phone from the charger on the kitchen bench.

"I don't have to ask for your permission, Sam" She said defensively, but still refusing to meet his eyes.

"I know…it's just that…I…"

"Would you rather me bring him here?" She asked turning to face him sharply.

"No!" He said, rather quickly and forcibly.

Dean came in at this point and she rolled her eyes in exasperation "Oh spare me" She mumbled to herself.

"Where does he live?" He asked, not beating around the bush.

She narrowed her eyes at him "Why?"

He raised his hands in a placating gesture and raised his eyebrows "Just in case…we need to contact you"

"I'll have my cell phone" She added, lifting it for the boys to see before slipping it into her purse.

"Do you know where he lives?" Sam asked, the concern more obvious on his face than on Dean's, whom she couldn't tell in under that knowing smirk he was even remotely worried.

"Look" She said tersely "I'm twenty four years old.This is not my first boyfriend and it is most definitely not my first sleepover, so all this interrogation and concern is really not necessary" She didn't want to tell them she didn't know where Jack lived "I do not have to explain myself to you"

"Fine" Dean said closing his eyes before looking at her again.

"Just keep your phone on" Sam said and she fixed him with a glare "please?"

"You got protection?" Dean asked blatantly and she had to fight the urge to cringe at the idea of discussing anything related to sex with her cousins. But her indignation at the question actually incensed her.

"I don't own a gun" She said innocently.

"No, I meant like…"

"I know what you meant" She interrupted him as she pulled out three condoms from her purse for them both to see.

Sam groaned and closed his eyes, unable to continue on the path the conversation was going. Dean just raised his eyebrows in disbelief.

"Three?" He asked smirking.

At Sam's discomfort and Dean's arrogant smirk, she felt emboldened "What can I say?" She smiled as she dropped the condoms back in her purse and snapping is shut, raising an eyebrow at Dean "I'm an optimist"

The doorbell rang and all three sighed in relief. Sam started towards the door "I'll get it'

She grabbed him by his sleeve before he stepped out of the kitchen "Oh, no you won't" She sad warningly.

"There's no way you're going without us checking him out" Sam said.

"Checking him out?" She asked incredulously "I don't think so"

With Sam standing in the doorway and effectively blocking her way into the foyer, it was easy for Dean to slip by and make his way to the door. She tried unsuccessfully to move around Sam, but he moved with her, continuing to block her. She glared fiercely at him, but he only moved aside when he heard the door open. They both knew now that she would have to introduce them.

"You must be Jack" Dean said as he opened the door.

Jack stood on the front porch, looking at Dean in confusion.

"Yes, hello" He said shaking Dean's hand "You are?"

"Dean" Dean said smiling "Isabel's cousin. Come in, she's just in the kitchen with Sam"

Dean moved aside to let Jack pass through. He stepped through the front door and found Isabel walking towards him from the kitchen. A tall, lean man behind her.

"You must be Sam" Jack said extending his hand.

"Jack" Sam said nodding as he moved forward from behind Isabel and shook the man's hand.

He looked at Isabel and he could immediately tell she was uncomfortable and wanted nothing more than to leave.

"You ready babe?" He asked her as he moved forward to kiss her.

Her eyes widened and at the last moment he moved his cheek to the side, and planted an innocent kiss on her cheek.

"Yeah, let's go" She said grabbing his arm and pulling him out.

'Where are you guys going?" Dean asked Jack before Isabel could drag him out the door.

The young man turned to face Dean and Sam. Isabel pinned Dean with a warning stare.

"Dinner" He said casually "Then maybe dancing"

"Right" Dean said slowly, not so subtly letting Jack know he didn't believe him "Well, Jack, you just make sure our little cousin here keeps her cell phone on, otherwise I'll get really mad"

Jack swallowed and looked at Isabel, who didn't take her eyes off of Dean "He's just kidding" She said with forced calm, then smiled frostily "Well, see you guys later, don't wait up"

This time she didn't wait or hesitate, she grabbed Jack and practically dragged him out the door, quickly getting in Jack's car. She finally looked back as Jack started to pull away. Sam and Dean were both standing on her front porch. Dean was waving at her in a friendly manner, while his eyes were telling her to be careful. It would have been almost sweet if she hadn't caught Sam writing down something on his palm. She rolled her eyes and shook her head as she realised he was writing down Jack's licence plate number.