My Niece's 21st Birthday Surprise

"She's ready for your 'date' on Saturday night." There was the text I had been waiting for, my sister letting me know that my niece was on-board for a special birthday present from her Uncle for her 21st birthday. My sister loved teasing me about how enamored I have been about Beth, her daughter, she was of similar build to my sister, medium size breasts, slim but firm build and a cute pert little ass.

The text alert went off again and i opened the message to find a topless picture of my sister with her pouting, "Hope you save some of that cock for your little sister." I smiled widely, my sister and I had been sleeping together since we were kids, she knew nothing would ever change that but she did love to tease me.

"Don't worry lil sis, you will be 50 soon, I have something really special planned for that night." I responded to her, including a devil emoji. Her response came quickly full of laughing emojis and the shocked eyes.

"Mmm knowing you that will be wonderful, just remember our deal, you can't tell her until you are already inside of her." The coming date night was three years of build-up coming to fruition, ever since Beth turned 18 I had been flirting with her as well as her mother dropping hints here and there. Over the years the flirting had turned into sexting and occasional gropes but she had stood firm on staying a virgin until she was 21.

The night of the date came and I picked her up at her mother's place, she was wearing a simple white dress which looked amazing on her and fit her body well, showing off her curves. Her long brown hair flowed freely and her smile was very infectious. Before I could start the car, she leaned over and kissed me, deeply on the mouth. "I've been wanting to do that a very long time Uncle Mark."

Dinner passed far too slowly for both of us, despite the friendly conversation and occasional flirting, we could both feel the sexual tension building, coming to a head after years of sexting and teasing. Each brief touch as our hands met felt like electricity passing in the air and we were both having to calm down least we do something indecent in public.

We chatted idly on the drive back to my place, the nervous tension and sexual energy thick in the air, neither daring to bring it up for fear of bursting it. We got to my place and sat on the sofa, kicking off her heels she tucked her legs up on the couch and cuddled against me, my hand rubbing her back as her hand rubbed my chest.

"This feels good Uncle Mark, I like being this close with you."

My hand moving up and down her back I told her the same. "It has been a long time since we started talking about sex hunny, we are here now." Her hand moved lower down my body, finding the bulge starting in my pants, although she had seen pictures of it many times this was the first time she had touched it and I heard her slight gasp as her hand started rubbing me. She looked up at me with a smile on her face.

"It feels bigger than it looks in the pictures." I chuckled and lifted her face to kiss her, really kiss her, as a man kisses a woman, pouring every bit of passion and desire I had for her into that kiss. She returned the kiss eagerly, our tongues dancing together as we fed on each other's passion. Our hands removing clothing from the other until we were both naked together. "Uncle Mark, I know we talked about doing a lot of things together, but I just want you inside me, I want to have sex with you." She straddled across my lap, rubbing her pussy against my hard cock as her breasts rubbed on my chest and we kissed.

"Whatever you want princess, it's your birthday after all." She smiled at me, reaching down to take ahold of me and rub the head of my cock on her pussy. She was very wet and warm, it felt amazing and reminded me of the first time so long ago I was entering my sister's pussy.

"It may be my birthday Uncle Mark, but I've been saving this special present for you for a long time." She guided my cock into her a bit, she was so tight around me, her hands found my shoulders as she started moving herself up and down slightly on my cock, it wasn't long before I felt the bump against her hymen and she winced a bit. Leaning down to kiss me, I felt her lower her ass onto me quickly; her mouth tight against mine forcing me to swallow her gasp and cry as she gave her virginity to me. "Mmmm you feel so good Uncle Mark." Her little pussy felt amazing and I could feel her flexing it on my cock,

"You feel so very good too Beth, and now I have a special present for you, a very special surprise." The look on her face was not the expected one of surprise but a little bit of mischief, some pride and a whole lot of naughtiness. Leaning into me, her breasts pressed hard against my chest, her eyes locked onto mine she grinned.

"I bet my surprise is even better... I saw mom's phone and your messages, I already know what your 'surprise' is.... daddy."

*can't shake this incest kick lately, it's been fueling all my thoughts [email protected]*