She didn't pull away from me, though we had stopped moving in the water completely.Gently, and ever so slowly, I allowed my hips to move forward and I...very carefully began to penetrate her. I was still rock hard even after my orgasm, and she was so wet it was almost effortless. Her moaning told me she wasn't objecting, and after a long few moments I was buried completely inside of my big sister. She hugged me close, burying her face in my neck. Very softly, she squeezed her cunt around my. I didn't bother to turn around. I felt it again this time I felt a poke with a slow movement to the right of my cheek. I didn't turn around I thought that was a mistake. Then it happened again. But with a little more back and forth against my butt. He kind of stayed there just rubbing against me back and forth the train was getting even more crowded. Obviously who ever this is needs to rub against an ass maybe he will go home and give his wife or girlfriend a hard fuck after he's finish humping. Four days later.....I call Dom, Matt, and Ray to come over and chill. Ray was the first one to arrive. Then Matt and Dom came together. Something was weird though they were holdin hands. I asked why you holding his hand Dom says yea were now dating. I thought well aint that cute. They took off their shoes and we went out back. We decided to go swimming but had nothing to wear so we went in just our briefs. I had just got my brand new pair of underwear from Diesel via mail. My mom had no idea.. Although she had rather modest breasts, which she made no effort whatsoever to enhance in her standard sports bras, the sight of her, with her hair pulled up at the back of her head, her taut ass encased in body hugging shorts, long smooth legs that went on for miles, with sweat coating her skin and soaking through her clothes was sufficient to drive the guys crazy with lust as they watched her play. In spite of the attention she received from the guys, three things held Nidhi back from dating..