Mystery girl part 3

The first time I heard her voice was as fascinating as frightening. I was scared getting to know her would ruin our adventure. But she didn't say much, didn't introduce herself or ask me for my name. She simply said, "Aren't you an unlucky creature? All this arousal, only to be interrupted twice. Are you going to leave like you did last time?". Her voice was clear and echoed off the walls multiple times before fading away. I simply shook my head, pulling her closer to the edge and lowering myself until my chin submerged fully in the water. I licked and sucked on whatever I got closest to and watched as the girl started shivering and quivering under every movement of my mouth.
At one point, she just laid back and stopped holding back. The moment I knew she was about to cum I stopped, she begged and pressed my head into herself as I did, but I showed no mercy. She was to endure the same **** of lust I went to for the last weeks. But she just let go of me and started pleasuring herself in front of me.
Eventually I climbed out the water, looming over but not stopping her. I kissed her as she came. Her face turned red and she let go of herself, putting her hands behind my ears just like she did in the past.
I lowered my hips and rested my groin on hers, teasing her as I came close to her entrance, but she covered herself with a hand and shook her head slowly. I lifted my lower half again and began to crawl over her in an attempt to stand up, but she placed her hands on my thighs as they were just beside her face and kissed me. Kissed me down there, licked me and caressed me with every means she had. Eventually though, I stood up. Much to her disliking.
I fished my stuff out of the water and just at the right time it seamed as I hear voices closing in again.
I handed her, her bikini and she tied it up just as the couple from the beach showed up. Turns out they are her parents and they wanted to leave soon.
She left with them, but not without telling me to come to the city park the day after. I didn't say anything, but just watched as she left, still a little wobbly on her feed.
After a short while, I decided to rejoin my friends. When I walked around the big rocks that surrounded the place, I immediately knew something was up. Amy was laying on her stomach and waved me hello. The other guys were sleeping on the back. Amy got up and started asking me questions about the girl, which I answered to the extent possible to me, but I was more invested in a certain set of stains on her swimsuit that I distinctly remember weren't there before. When I confronted her about the stains, she just said that 'I had my fun, so why shouldn't she have hers?'. Can't argue with that, I suppose. Amy looked over to the sleeping boys and ask if I'd mind if she took a sunbath. I didn't of course, so she took her swimsuit off and laid down onto her towel. It's not like I've never seen her naked before but I still have to admire her body every time she exposes herself like this. I suspect her enjoying that kind of attention to some extent but I just laid down next to her and let the sun tan my skin.
I was woken up by Josh, who shook me awake, telling me it's time to leave. The sun was already starting to set and Amy was packing our stuff into the backpacks. When I brought the guys home one by one, the sun was gone for the day so it was pretty dark when Amy and I got out of the car. I hugged her goodbye and watched as my she stepped into her house, next to mine.
That night, I had a fabulous dream about the mysterious girl. The girl and Amy. I didn't know what to think of that, so I decided not to think about it at all.