Step niece

My wife has a ** niece that I had ** with awhile back. She is a tall blonde with long legs , perky ** and a tight , athletic body. She is ** but legal nonetheless. For a long time she has had a crush on me and for years I fantasized about her. She developed early and every guy eyeballed her. I never gave any thought to actually doing anything until several weeks ago. She spends the night with us often and watching her walk around in her ** and T-shirt makes me crazy. The day it finally happened my wife was gone for the day so it was just her and i at home. I was sitting on the couch drinking my third beer of the day enjoying my day off when this ** girl walked in from the pool. She was wearing an incredibly tiny two piece suit and when I saw her I just froze. She smiled at me and tossed her long blonde hair as she dried it. We chatted for a minute then she sat down beside me. She continued talking to me but I didn’t hear her because all I could was stare at her body. She picked up on it and placed her hand in my leg. Our eyes locked and as my heart beat of control I leaned over and kissed her. We broke the kiss and her eyes were filled with **. At that point all bets were off and it was a flash of lips and hands all over each other. Somehow she ended up straddling me and she ground her ** against my **. I flipped her on her back and as she sirens her legs I stripped quickly. My ** was super hard as I steadied myself over her. She pulled her bikini bottom to the side and I slipped into her young **. It was the tightest , smoothest ** I ever had. Her long legs wrapped around me and we ** for what seemed a long time. She moaned as my ** stretched her wide. The feeling was beyond amazing. I suddenly felt my ** overwhelming me and I pulled out. The sensation of me pulling out made her ** and she moaned loudly. I dumped a lot of ** on her stomach and when I was finished I used my big ** head to tease her swollen **. It was completely insane but it was also one of the greatest conquests of my life. Since then we ** whenever we can and I don’t feel bad about it one bit.