My sister had turned around and looked me in the eyes with thanks and was now going to make me feel how good she did. She glanced down at the tent in my swim suit and back up at me with a devilish look in her eyes. We were taking it slowly, but not slowly enough to where we lost interest. This was all going to lead up to something.

Still facing me, she grasped my hard-on outside my suit, getting a feel for what she would have to encounter. I wrapped my arm around her and embraced her sexy, petite figure as she reached inside my suit. Her hand wrapped gently around my shaft and I squirted a little precum out underwater. She slowly massaged the base of my penis as I grabbed her ass tightly. I asked her if she wanted to go inside and shower off and she agreed. We went inside excitedly, as we both knew we would now see each other naked.