Disclaimer: I do not own CSI, Neighbours or the song Unfaithful (Rihanna). Am just borrowing :)

It is inspired by the song, will be a Cara fic in the end I promise. Scarlett Bar and Steph are a tiny Neighbours crossover. This is my first fic, all reviews and criticism are welcome. Enjoy x

x x x x

Unfaithful

Story of my life, searching for the right
But it keeps avoiding me
Sorrow in my soul cause it seems that wrong
Really loves my company

He's more than a man and this is more than love
The reason that the sky is blue
But clouds are rolling in because I'm gone again
And to him I just can't be true

And I know that he knows I'm unfaithful
And it kills him inside
To know that I am happy with some other guy
I can see him dying

I don't wanna do this anymore
I don't wanna be the reason why
Every time I walk out the door
I see him die a little more inside

I don't wanna hurt him anymore
I don't wanna take away his life
I don't wanna be a murderer

I feel it in the air as I'm doing my hair
Preparing for another date
A kiss up on my cheek, he's here reluctantly
As if I'm gonna be out late

I say I won't be long just hanging with the girls
A lie I didn't have to tell
Because we both know where I'm about to go
And we know it very well

Cause I know that he knows I'm unfaithful
And it kills him inside
To know that I am happy with some other guy
I can see him dying

I don't wanna do this anymore
I don't wanna be the reason why
Every time I walk out the door
I see him die a little more inside

I don't wanna hurt him anymore
I don't wanna take away his life
I don't wanna be a murderer

Our love, his trust
I might as well take a gun
And put it to his head
Get it over with
I don't wanna do this
Anymore, anymore

And I don't wanna do this anymore
I don't wanna be the reason why
And every time I walk out the door
I see him die a little more inside

And I don't wanna hurt him anymore
I don't wanna take away his life
I don't wanna be a murderer
A murderer, no no no
Yeah

Chapter 1: The Boyfriend And The Temptress

The blonde squealed as her boyfriend's legs hit the bed and they fell backwards, with her landing on top of him. She grinned and kissed him softly on the lips. "I have been waiting to do this all day. It feels like I haven't seen you in ages." Catherine mumbled as she nuzzled his neck.

"Well you've got me all to yourself now." Gil Grissom smiled, feeling himself getting hotter by the minute as his co-worker kissed along his neckline.

They had been secretly dating for seven weeks and though it was not the most exciting of relationships, Cath knew she was safe with Gil and she was getting regular sex, which was an improvement on recent months. Grissom meanwhile was surprised to find that he enjoyed spending this time with his best friend, even if he was still getting used to Catherine and her habits. Living around Lindsey was no problem, but he was not accustomed to having Cath mother him so much.

As she began unbuttoning his shirt and kissing his chest, she heard him groan and grinned, she loved what she did to him. "Hmm, enjoying yourself are we Dr Grissom?" She kissed his lips again and traced her tongue along his jaw, gently sucking on the skin. She knew she was driving him crazy. However her ministrations were interrupted by the trilling of her cell phone.

"Hello" She answered amid kissing Grissom's torso. "Sam? What do you want?" She sat up abruptly, causing Grissom to emit an irritated growl as he was now laid impatiently with his girlfriend sat atop his stomach, aching for her to carry on her previous actions.

"Muggs, do I need a reason to want to talk to my daughter?"

"Spit it out Sam I'm busy."

"I want to talk to you, not over the phone, face to face. You know the Scarlett Bar?"

"Now? Alright, I'll see you there in 20. But this had better be good." She hung up and offered Grissom an apologetic smile and a soft kiss. "Sorry babe but we'll have to continue this later." She clambered off him and got dressed, giving him another quick peck and a sorry before leaving. Grissom heaved a frustrated sigh as he watched the silhouette of his girlfriend disappear down the hall.

X x x

"Muggs, please don't go yet." The strawberry-blonde stalked through the tables towards the door, ignoring the pleas of the man behind her. He had promised her a proper explanation as to why he had never told her he was her father; but all he offered were excuses and they were not going to wash on her. She had endured 10 minutes and as far as she was concerned that was as much as she owed him.

As she wandered past the bar something caught her eye. Turning around she realised it wasn't her imagination, Sara Sidle was sat nursing a beer and chatting to the bartender, a blonde woman in her early thirties who had a biker-chick thing going on. As the blonde woman wandered off to serve someone Catherine sauntered over and leant down to whisper in Sara's ear: "Well, well. Fancy seeing you here." Sara nearly jumped out of her skin and turned in her seat, coming face to face with blue eyes.

"What are you doing here?" she asked startled

"I could ask you the same thing." She made herself comfortable next to the brunette and ordered a beer when the barmaid, Steph, came over. "So, what are you doing here?" she asked casually.

"Trying to forget." She raised an eyebrow at Sara's cryptic answer until realisation dawned on her.

"Oh yeah, I heard about your case, hit you pretty hard huh? Wanna talk about it?" She asked sympathetically.

"Nope." Came the blunt reply. "Why are you here?"

"Sam." It was Sara's turn to raise an eyebrow. "I don't wanna talk about it." Cath growled miserably. Sara smiled for the first time and raised her beer.

"To not talking about it."

X x x

They sat there for a while before Catherine suggested moving back to hers to share the bottle of wine lurking in her cupboard, completely forgetting about her boyfriend lying alone at his townhouse.

"No way!" Catherine shrieked, almost causing Sara to drop her wine glass. They had curled themselves up on the couch and were animatedly discussing their past feats. Sara, usually more closed off about herself, discovered that red wine apparently made her rather loose-tongued, something which Catherine was exploiting to no end.

"Way." Sara smirked at the blonde's baffled expression.

"Sara Sidle you shady lady! And here I assumed you were always such a good girl." Sara laughed and Cath couldn't help but notice how much more relaxed she seemed away from work. "So, little miss rebel: aside from skipping classes, sneaking vodka and dating the local bad boy, what else did you get up to at school?"

"Well, there was this one teacher…"