Cool, smooth sheets moved against Caitlin's legs. The silky-smooth fabric was a contrast to the warm body spooned against her back. She could feel breath against her neck and an arm draped over her side. She opened her eyes and saw a digital clock. Her slight OCD nature led her to always place her clocks where she could see them from her pillow. The sheets smelled of sex; as fastidious as she was about hygiene, Caitlin enjoyed it. It was a warm smell, the mingling of two bodies. The body chemistry of the partners made a difference as to how strong or how pleasant the post-frolic funk would be.

Wells had a pleasant scent; neither too musky nor dark. Caitlin inhaled slowly and the fragrance of their combined bodies mixed with laundry detergent and his shampoo. The primitive pleasure of smelling a man's scent on her outweighed the vaguely sticky feeling of her skin where their combined sweat had dried. She stretched carefully; her hips had been sore after their initial encounter in his office. The muscles one used when gripping another person between one's thighs weren't regularly exercised in that particular way so on the rare occasions Caitlin indulged in a lover, she also battled her body's protests.

The bedroom was still completely dark with no light around the window. Caitlin felt Wells shift behind her and kept her body relaxed. He rolled away from her gently and walked to the bathroom, shutting the door. She took the opportunity race, clad in only the t-shirt he'd given her, to use the bathroom down the hall and run back to slide back into bed. He rejoined her and took up his previous position. She dozed again, waking about an hour later to an empty bed. She picked up a dark red throw blanket from the dark, leather bench at the end of the bed. She wrapped it around herself and went in search of him.

The familiar glow of a computer screen led Caitlin to an open doorway down the hall, she paused on the threshold. Wells sat behind a desk, facing the door. He didn't appear to see her right away but was engrossed in his work. She walked in, quietly and when he saw her he blinked a few times and smiled. She approached his desk, and he removed his glasses, leaning back and stretching his arms above his head. She walked around to his side of the desk and he reached for her, tugging her, blanket and all, in front of him. She didn't dare to lean back against the desk for fear of sitting on his keyboard. He moved his legs between her, nudging her feet farther apart.

Wells smiled at Caitlin softly; he knew she was uncomfortable interrupting his work. It was too much like being at the lab. He moved his hands around her waist and tugged her forward. His chair didn't have arm rests so he was able to pull her flush against him. She stood with her feet on either side of his chair until he tugged her down to sit on his lap. He was already getting hard looking at her sleepy face, tousled hair and bare legs. He placed his palms on her thighs and let them glide up under the blanket until he gripped her buttocks.

Wells rubbed himself against Caitlin gently, feeling her warmth through the thin cotton of his pajama pants. Her lips parted slightly, making an expression he now knew to be sexual excitement. She still smelled like him. Dropping the blanket from her shoulders, she reached for the drawstring of his waist band. When she brushed the front of his pants he jumped under her touch. Her delicate hands were cool against his warmer skin. The gentle touch of her fingertips on his erection excited him because there was a shyness to her actions. He had driven most of their encounters and wanted to see what she would do on her own.

Grasping Wells' hard penis proved a good starting point and he inhaled sharply. Caitlin stroked him a few times, before rising up above him and slowly sliding him inside her. Rolling her hips to get comfortable she sat facing him and leaned forward to place a soft, hesitant kiss on his mouth. He smiled at her and kissed her back. She started to rock forward and back, using her thighs to grip him and raise herself up. She raised her arms above her head when he tugged at her shirt and he lifted it off, baring her beautiful breasts. He kissed them and teased with his tongue, swirling it around the dark aureole.

Caitlin pressed her lips into the hair at Wells' temple and clenched her inner muscles, lifting herself up while she squeezed him and he nearly choked. She did it again and he broke out in a sweat.

"Keep going?" she asked.

"If you want to skip the good parts and go straight to the end," he replied. He grasped her hips and rolled his pelvis up to meet her. She was tall enough that she could reach the floor so she planted the balls of her feet and started to move up and down while rolling her pelvis against him to add extra stimulation.

"Say it," she teased with a smile. She let her teeth scrape his neck and the outer shell of his ear. His hands tightened on her briefly before ultimately giving up the fight. He smiled in the dim glow from the monitor.

"I want you to fuck me, Caitlin."

The words brought out Caitlin's competitive nature and she rode him faster, tightening her internal muscles every few strokes but keeping her rhythm going. He knew she was taking her pleasure with his body but he didn't mind. He liked the idea of her getting what she wanted. He resumed his attention to her breasts and it wasn't long before her legs were tightening and she was grasping his shoulders so hard he felt her nails. She closed her eyes and bit her lip when she climaxed, and he waited until she finished. She panted against his neck and he shifted her weight in his lap so that his fingers were laced together under her bottom. He stood carefully, remaining inside her, and stepped to the side where he set her down on the edge of his desk.

Caitlin allowed Wells to push her back so she lay across the desk top. He leaned over her and kissed her as he began to thrust. He stood up straight and hooked his arms under her knees, pulling her pelvis tightly against him. From this position he started pumping hard and fast. He could look down and see the place where he penetrated her as well as her naked torso. She'd dropped her hands to her sides and grasped the edge of the desk, holding on to keep herself from sliding off. He clenched his jaw when he came and thrust hard through the shudders that ran through him. She felt so amazing and he wanted to spend hours on top of her.