Not quite sure just how much I was about to endure. Daddy's cock pushed against my tight hole, slowly stretching me wide enough to hold his girth. "it... burns Daddy..please stop..Daddy?!" I protested softly, noticing the burn start to fade as my pussy grew accustomed to his invasion. I realized I had been holding my breath and released it in a whoosh, along with a lot of tension I had been holding in. "That's it baby, open up for Daddy" he said, pushing deeper..finally breaching my virgin. She grasped it and rubbed the purple knob between her slippery lips. He teased her clit, enjoying the sounds of her anxious whimpering as she attempted to pull him into her by tugging on his hips. He thrust his hips forward, his cock easily slipping into her waiting love tunnel.Mark pulled her forward on the bed, allowing him to gain full entry. They settled into a cadence, she timing her hip movements to each of his thrusts while he rubbed his cock side-to-side and top to bottom as he moved in. When they passed my bedroom door they looked in, but I pretended to be asleep, so they went by. I heard Mom say to Daddy that she noticed I was beginning to grow up into womanhood, and he replied that he noticed it too.I slipped my panties off my bottom and kicked them to the foot of the bed, and then I wriggled out of my t-shirt so I could play with my breasts and my pussy at the same time. I was already wet when I slipped my fingers into my vulva and found my little clitty, which I fondled. I lay atop her, carefully, my thigh pressing her cunt, my boobs squeezing against her, my face an inch away from hers.We looked each other in the eyes and we both giggled. I kissed her gently, but her lips just sat there. I kissed her again. And again. I used my tongue to trace her lips and her mouth opened slightly. I pushed my tongue into her mouth very slowly and her mouth opened up. I inserted a second finger into her cunt. I kissed her deeply and felt her arms around my back, pulling me.