I know that it is sick; I know she is straight but I just cannot help it.

I can smell her perfect sent as she sways in front of me, speaking of the brutal things that people can do to each other. I have to twirl my chair and turn my back upon her as my thoughts of bringing her over the abyss controls me, or making her scream profanities as her orgasmic body crumbles at my touch.

I just close my eyes and listen to the tone of her voice instead of the monstrous words of killers and their victims. I must look like an idiot or as if I had fallen ill but I have to go through this ritual. Closing my eyes, deep breathing and clenching my thighs all to relieve myself of the thoughts of a sexual nature directed towards my fellow worker Emily Prentiss. I know for a fact that I had looked odd due to the short yet stern look I received from Hotch as I finally reopened my eyes.

As Emily finished her speech, I knew that this time I would not be able to wait until the end of the shift to live out my many fantasies alone in privacy under my sheets as she had leaned over to collect her things during her last few words. Everyone else had also began to collect the various array of papers drawn out in front of them so none had noticed Emily's breasts lingering on-top of my shoulder as she leaned over the desk. As we are friends, I suppose there would be nothing for anyone to notice, but it is different to me. The weight of her large breasts sent me into a frenzied trance and it hit me what I had to do.

Instead of tidying and heading to the jet with the rest, I almost ran to the bathroom.

As Emily, Garcia and I are the only three women in the department, it would be empty. I lean over the sink an begin to splash the cool running water over my face in an attempt to cool the burning passion that is bursting through my veins, however this proved unsuccessful. As I dry my face I have taken one final chance to convince myself out of what I was about to do, but I could think of no way to survive for the day.

My clit already felt like how my ex-boyfriend had described 'blue balls'. It was throbbing with the need for pressure enough to find its release. I had never known myself to feel this much desire for another, and with this thought I dread to think that this intense sexual love does not just limit to the longing to fuck her brains out but to make love and share with her for eternity.

I back up into the first cubicle and shut the door, my hand lingering on the cool steel bolt as I fasten it shut wondering if this is acceptable. Even though I know it is not I continue...

I undo my trousers, linger my hands over the silk of my underwear, and focus my thoughts on the beauty that is Emily Prentiss. With a sigh, I lean back against the door with the full knowledge that I will have to be quiet just in case anyone comes in. As my fingers explore they are encased with the wetness from beneath my folds. I smear my juices over my fingers and start to rub my clit. Sliding, stroking and feeling my hardened nub, circling with my soft fingertips imagining it was Emily there not my own hand.

I need her face licking me now as my legs are wide open longing for her touch between them. Nevertheless, she is not there.

My body begins to tremble and I sit down onto the toilet and imagine that I am grinding upon her face whilst grinding on my hand and using the other to manipulate my breasts like the dirty slut that I am. I want her tongue to plunge into my hole whilst her nose brushes over my clit so she can taste deep into my core. I enter myself for the first time and cannot help the moan that escapes my jaw.

Then I hear the main door swing open. I begin to blush. I have to get a hold of myself soon otherwise my prolonged stay in the cubical would seem strange.

Boots click against the floor and finally stop outside my door. Whoever the mystery guest is they have just stopped to rest upon the other side of the door.

"JJ..." then silence. However, I know that smooth voice. I know that it belongs to the character of my fantasies, Emily Prentiss. "Jenifer fucking Jareau, I know what you are doing in there."

My heart stops, show can she possibly know, she has only just entered the bathroom... apparently I have been thinking for too long and she speaks again, a little more confidence in her voice now.

"You cannot tell me that you ran to the toilet just because you needed the loo, I know that you are waiting behind this door desperate for me to sweep your fingers aside and drive my own into you, swiping my tongue against your clit fucking you deep, hard and fast..."

What will happen next... Will JJ take Emily up on the offer when it could risk their friendship. Or will the compromising position JJ is in have pushed them over the line already?