And with that he proceeded to gently tilt and dip his hips, letting the head of his cock rub slowly up and down. His lower abdomen and the muscles leading down from his pelvis rolled back and forth with his movement. Even though the game had just begun, Eve could see she'd placed a losing bet. The sensation was so much sharper than a pair of fingers and knowing that, at any time, Cain could push deeply into her kept Eve on edge as she lost the smug smile on her face and began to breath more shallowly.
"Not bad, lover boy." She said breathlessly. He gave her a boyish smile but quickly brought his attention back to where they joined.
Stopping his gliding path, Cain slowly began to press inside, watching as her plump cleft gave way and enveloped each inch of him. Half in, he retreated and repeated the same for several minutes. Push, stop, pull repeat. Eve wanted to sneak a little wiggle, cant her hips or flex her muscles, anything to increase the pressure. Instead, she grit her teeth and kept absolutely, perfectly still.
Sweat began to bead on Cain's upper lip and along his collar bone, but he continued with determination, pushing just as slowly in as he pulled, tiny flexing of his hips guiding him.
Despite herself, Eve let her head fall back and broke out with a deep, long moan. Each push had her body sucking at him as she he pushed through rings of muscle at her tight opening, parting through the deep folds of her canal. With the pace he controlled, concentrating on only that movement, only that one point of contact, she felt everything. Willing herself to relax, She sucked air in through her mouth and out through her nose, trying not clench.
Given her distress, Cain thought to up the ante and on the next slide in he pushed all the way, until his balls were pressed up against her lips. He received a deep groan for his efforts and a quick, inadvertent spasm of muscle. But he went right back to slow shallow strokes, his sweat and the death grip he had on her knees were the only indication of how this affected him. Eve could only lie there open to him and beg in her mind for another thick thrust to fill her deeply. And right when she'd finally caught her breath, she got a another quick, hard shove, as deep as she could take. Taken off guard, she clenched her entire body, her knees and shoulders lifting off the bed. " Cain...." She groaned. "I give in. You win. I need more. Please..."
He looked up at her and smiled, his hips continuing their methodical dips as if he could continue this pace indefinitely. "Are you sure, Eve-y? You know you can't go back. Once I start..." And with that, he just as quickly dropped his palms flat on the bed and slammed in hard. One. Two. Three. And before he could pull back for a fourth, Eve clamped down with all her might and came with a thick jerk and a silent gush of breath.