Just that one word was enough to cause Nathan to instantly harden. He never knew just how much her calling him that would affect him. It made him feel dirty and perverted, but turned on and sexy at the same time. His hand slid up from her waist and under her silky top to cup her now larger breast, the weight of it resting heavily in his hand. It was nice. Different than the pert smaller breast he was used to, but still nice. He squeezed it lightly, his fingers sliding nimbly over the smooth skin to thumb her nipple. God, how he loved it when she didn't wear a bra.
Her supple little bottom wiggling in his lap made him groan low in his throat. How was he supposed to hold out against this kind of assault on his senses? He threw her roughly down on his bed as he pushed her thighs apart to lie between her legs. Kissing his way down her throat and over her chest, her top pushed up over her breasts, he lingered a moment to lick her nipple, then sucking it to a hard peak. He made his way further downward and kneeled in front of her, his big hands shoving her skirt up to her waist. Lowering his head between her legs, his tongue darted out to slide up the side of her thigh, stalling at the line of skin where her panties met her groin. His eyes looked up at her face, her skin flushed, her chest rising and falling in anticipation.
"Tell Daddy what you want him to do, baby girl. Tell me what I can do to make you come, to make you cry out for Daddy."