My cute neice

So we all went to the beach for a sunset swim and I was excited to catch up with family before they left for the summer. I had been low key flirting with my niece Belle for a few weeks. The night before I had my hands up her skirt under the dinner table with everyone around, and she had her had on my hard buldge. So I knew she was interested in doing more if we could just get some alone time.
At the beach she was wearing a short skirt and a light blouse. I could tell she wore no bra by the shape of her tits. She looked so damn cute. She was asked to go to the car and go get some things at the store for a sunset bonfire. I offered to go with her.
As soon as we were out of everyone’s sight we could act like we wanted around each other. So we held hands. There was a tunnel by the beach that led to the parking lot and it was empty and dark so I pushed her up against the wall and I kissed her. It was our first time making out. She’s 17 and I am 38. Damn was that fun. My hard cock pressed up against her. My hand on her ass. She kissed so passionately that it felt more like the release of years of tension.
She blushed and giggled all the way to the car. The lot was surprisingly empty. We got inside and began making out again. My hands were running all the way up her skirt. High enough that I could pull her panties off if I wanted to. I grab her and playfully pulled her over to me and my lap. She knelt over me as we continued to kiss. We were having fun. I took my hands up her skirt again and grabbed her ass. She laughed. So damn. Cute. But then it got serious as I began to rub her pussy. She got quiet and then she moaned. I slid a couple of fingers in her and she got super wet. I could probably get her to cum pretty quickly. I told her to show me her tits. She was hypnotized with pleasure, and without any consideration for anyone around us she yanked her blouse off. Her small soft tits hung right in front of my face. They bounced like there was no gravity. I remember tits like this when I was a teen. Young and strong. I missed them. I started to kiss her chest and licked her nipples. The sea air and sand in my nostrils and mouth. I continued to finger her hard. Three fingers seemed to much for her right pussy. I asked her if she wanted me to fuck her she said to just keep going. Within a few minutes she exploded with cum and a scream of pleasure. I pulled my hand out as she sat down. The car was a sauna. We stared at one another and smiled. I loved her in that moment. We both knew that this could be the only time we would ever do this, and damn was it fun.