My older neighbor always let me use his pool and spa, so my parents always trusted him. After a while he would let me do cool things like invite my friends over for a pool party while he would supply drinks and food.
One day it was just me and him in the pool and we had been drinking a little. Some music was playing so I was dancing here and there, we eventually started dancing and we ended up cuddling with each other in the jacuzzi. As I was sitting on his lap, I could feel him push my bathing suit to the side so he could push himself up to my pussy with his clothes still on. He kept slowly massaging my clit until I felt him get hard.
He eventually pulled his cock out of his swimming trunks without me knowing since the massage jets were on and the visibility under the water was choppy. I felt him push the tip of his cock inside my vagina and pull back out. He made several small strokes and finally grabbed my arms and pushed himself all the way in.