Disclaimer: Don't own 'em, don't make any money from writing about 'em.

Rating: M for sexual content and adult language and themes.

Spoilers: Just to be on the safe side, I say yes.

Chapter 4

"It is always by way of pain that one arrives at pleasure. Indeed, pleasure and pain succeed one another." -Marquis De Sade

"You read my mind, Derek Morgan."

Emily smiled slowly, watching as Derek became visibly more aroused. He leaned down for another kiss, reaching around to grasp the back of her neck with one hand, the other tangled in her long raven hair. Pulling her up into a sitting position, he deepened the kiss even more, using his tongue to slowly and gently explore her mouth. Emily had a beautiful view of Derek's huge, straining erection as he was knelt between her splayed legs, and her sex clenched once again, desperate for him to push it inside her.

Emily moaned quietly, relishing in the sensations as Derek's hands moved from her head, down her sides and stopping to rest on her hips.

For a few moments, Emily allowed herself to enjoy the simplicity of their position. It was a remarkably erotic thing, being face to face and skin on skin with someone so beautiful and selfless. If Derek was content to plunder her mouth with his mindblowing kisses while caressing her body from breast to thigh, she was not about to complain.

Then again, she also would not have dreamed of complaing when Derek suddenly stopped his hands to rest on her thighs and gently tugged them over his, leaving her wide open to his throbbing cock. A sharp gasp escaped her as she felt the head brush against her sensitive pussy. Groaning, Derek reached behind her to grasp her round ass, and stopped for only a moment to whisper desperately into her ear, hot and heavy, "Emily... Emily... Princess, are you ready?"

Emily hummed affirmatively, gasping against Derek's neck as she struggled to form the words. "Derek, God, I've been ready since I saw you at work this morning."

Derek's hands tightened on her buttocks, a primal groan escaping his lips just before he thrust his pelvis forward, while simultaneously using his grip on Emily's perfectly rounded ass to bring her cunt into contact with his cock.

"Ohhhhh, God!" Emily's exclamation was somewhere between a moan and a scream as she felt Derek's vast manhood slam into her swollen entrance. Her fingers instinctively dug into Derek's shoulders as she bit down hard on her lower lip and tried to level her breathing. Derek paused, his thighs trembling with the willpower it took to do so. "Emily, you good?" She could tell he was speaking through painfully gritted teeth, and she nodded quickly, reassuring him. She desperately did not want to make this unpleasant for him, but it had been several months since she had been penetrated, and she did need time to adjust to his size.

"Go slow," she whispered. "Please."

"Of course, Emily," Derek murmered. He thrust again, more gently. She cried out again, softly this time. Derek stared into her face, admiring the canvass of pleasured pain there. His hands moved up her back to her shoulders, and he began rocking his hips steadily, stroking his engorged cock in Emily's hot, wet walls. She was so tight, her soft folds clinging to his shaft as he pumped in and out, relishing the whimpers and sighs of pleasure he was coaxing from her beautiful mouth.

Resting his forehead against Emily's, Derek continued to stroke, the limited space between them making the thrusts torturously slow and shallow, yet allowing him to push so deeply inside of her that the head of his cock was bumping against her cervix. Kissing her again, he marveled in the soft heat of her mouth. She was crying out into his mouth now, her thighs trembling around him as she struggled to keep control, to keep her orgasm at bay. She so desperately wanted this to last.

"Emily," Derek whispered, "I'm gonna lay you down, okay, beautiful?"

Emily nodded wordlessly, her hands still gripping fiercely onto Derek's shoulders. Derek slowly, gently leaned her back onto the bed, his cock never pulling out of her body. Once she was on her back, her feet resting on the bed on either side of Derek's knees, he began thrusting again, harder now. He closely watched her face for any signs of pain or discomfort, and was relieved when he saw none.

"Oh, God Derek, yes." Emily's eyes were squeezed tightly shut, her lower lip again caught between her teeth as she revelled in the hard heat of Derek's cock stroking hard and fast, in and out of her core. She could feel herself nearing the edge, and still she concentrated on delaying her climax, knowing that when it hit, Derek would surely follow closely behind and bring an end to their lovemaking.

"Emily," Derek groaned, his arms burning as he held himself steady above her, his face mere inches from hers. Forcing her eyes open, she found herself staring into his face, and all at once an overwhelming rush of emotions hit her. The events that had brought her here tonight, along with all of Derek's skilled and thoughtful actions throughout the evening, the pleasure he was currently sending coursing through her body - it was all too much for Emily's overheated body and exhausted mind.

Another cry escaped her lips. This time, the cry was a strangled sob, a swirl of despair and gratitude, a mishmash of physical pleasure and unspeakable pain.

The sound and it's implications were not lost on Derek, and he leaned down to press his forehead into Emily's, speaking fiercely to her as he saw a tear slide down her face. "Emily Prentiss, you are fucking beautiful, you are goddamn perfect and anything you need, I am here. You better fucking know that."

Emily nodded against the tears that were now coursing down her cheeks, and choked out two words around her sobs, "Don't stop."

He didn't.

Emily felt her climax mounting again, and this time she was quite certain there was no stopping it. She decided, distantly, that she did not even want to try. She wanted to come, and she wanted to take Derek over the edge with her. The pain that was building in her heart needed to be obliterated, and she was hoping, so hoping that this final climax would be the key to that obliteration.

The spark began deep in her belly, and spread through her like a crescendo. There were no screams of ecstasy, simply soft moans accentuated by quiet sobs. Her arms left Derek's shoulders, falling onto the bed at her sides. Derek felt her walls clench tightly around his cock, and he gritted his teeth, letting go and allowing his climax to finally explode into her. She cried out once, feeling his white hot seed spilling into her and intensifying her orgasm, blinding her and washing away her pain. Derek's eyes left Emily's face for a brief moment, and he caught a glimpse of her left hand, palm up on the bed.

Her fingers were shaking uncontrollably.

Derek felt his chest tighten with pain at the sight, and as he rode out both of their orgasms, he grabbed Emily's hand and squeezed it tightly.

When their eyes opened again, Derek was on his back, still holding Emily's hand tightly in his. She was resting on her side, her naked body flush against his. Looking down, Derek took in Emily's tear streaked face and kiss swollen lips. Her jet black hair fell wildly around her shoulders, a stark contrast to her milky white skin.

God, she was a beautiful mess.

Derek hated to break the comfortable silence, but he had to know.

"You heard what I said, right, Princess?"

Emily looked up at him, her long dark lashes sweeping up as her deep brown eyes focused on his face. "I did," she said softly. "Thank you, Derek." Her eyes left his face for a moment, then returned as she added, "For everything."

Guys, I am SO SORRY it has taken me so horribly long to add this chapter. I do hope you enjoyed it, and please tell me in the reviews if I should continue or leave it at this. Thank you again so much for all your reviews and compliments thus far. Also, in response to a question a few of you have asked: I do take requests. No promises, but I will do my best to write any story (any shipping) that is requested.