She was showing off the new dress she had bought for the graduation dance. He was her step-brother back from college. He had been her confidant since she was eight. Now he watched as she showed how pretty the dress made her feel. He had always loved her as his sister. Now he felt new stirrings for her as a woman.
She turned, looking into the full-length mirror, which gave him a profile of her bosom. When had her breasts grown so full and beautiful? He caught himself staring at the two perfect globes of soft white skin. He looked up and saw her watching, watching him stare. She smiled, wagged her shoulders, blushed, then looked away, embarrassed.
When she looked back, his eyes met hers and locked. They both felt their hearts beat faster as they knew it was a longer look than normal. She swung her head away and turned her back to him as she looked at herself in the mirror. Now, from behind, his eyes drifted down her back, noticing the curve of her chest, the thinning of her waist, then the spread of her thighs and buttocks.
The dress revealed the cleft at the top of her butt, as he looked down to where he imagined her legs must split. As his eyes took in the soft rounded curves, he realized that he didn't see any thong lines over her hips.
She glanced back, caught him staring at her butt. Her face turned bright red, but she smiled, turned away, lifted her head, shook her curly red hair until it swayed loose, and arched her back, making her butt stick out towards him. Then she gave her hips a wag, swinging her butt as if to flick some hidden tail.
She may not have known what she was doing, but his erection was instinctual. His heart beating faster to match his breathing, he took a tentative step. Then, as his conviction grew, he took a couple more steps towards her. She turned, facing him, took a step away and found herself backed against the wall. He took another step, now close enough to touch her. She avoided his eyes, looking down, and saw the bulge in his pants. Her heart began to gallop.
Part of her wanted to run, but another part kept her frozen. She felt the heat of his body... so close. She felt herself weaken, begin to shake. Her knees became rubbery. Her breath quickened.
He took one more step forward, his body now brushing hers, a foot sliding between her feet. Before she knew what she was doing, her knees twitched apart at the touch of his incoming knee. Her widened stance let his knee in further. She felt him slide between her inner thighs. Her heart was pounding. She tried to calm her breathing. He leaned into her.
"I love your dress," he whispered as his hand reached down and took the hem between his fingers. His knuckles brushed her knee as he rolled the material. He let go, and with his fingertips, he traced the edge of the dress against her thigh. She moved her leg away, spreading her thighs further apart. She felt like she couldn't breath. She felt so vulnerable. She didn't know what to do.
When she was younger, how many times had she asked him to tickle her, enjoying his strong but gentle touch. Now, as his fingers brushed her leg, it wasn't to tickle. Her head was swimming as new feelings ran up and down her body. Part of her didn't want him to stop and was enjoying the new sensations, including the growing moisture in her crotch.
She looked up at his face. He bent forward, watching her lips. As he moved closer, she felt her lips swell. She let them open slightly in anticipation of his kiss. She melted into his body as he leaned into her breasts, then into her lips.
He pressed his lips to hers, then let his lips slip open. She followed and opened her mouth. He answered her invitation with his tongue, wet and slippery. While he explored her mouth, his fingers slid under her dress on to her leg. She felt a burst of heat flash from her legs to her lips, then back down to her crotch, where it triggered a gush of more slippery fluid.
Light-headed and dizzy, she felt like she was in a dream and she didn't want it to end. She relaxed her leg and let it swing open from the gentle pressure of his hand climbing her inner thigh.