My SIL pushed her ass into my dick and then my hand during a family photo

The whole family (over 25 of us) was setting up to take a photo and my SIL ended up in front of me. I’m taller so I was in the back and she was positioning herself to be in front of me. We were all still shuffling around collectively to get in position when she bent over as if not to block the people behind her. But by doing so her ass came back directly into my crotch. I looked down as it happened, seeing her small yellow shorts from above as her ass pressed up against me. My dick twitched when it touched her but the rest of my body was frozen.

She turned her head and saw she was pressed up against me. I looked at her face for her reaction but she was totally unphased. She didn’t say anything. Instead she readjusted her ass to my left side slightly then bent over again. This time her ass pushed up against my hand and I felt the back of my fingers fall between her ass cheeks.

I pulled my hand back instinctively… but I quickly rethought it. Why not let it stay there? She was the one that backed into me. So I let my hand rest against her again. She didn’t pull away. The back of my fingers lightly touched what I guessed was her pussy. By now we were all bunched together and smiling for the photo.

Click.

Someone called out to take one more photo. My hand was still there. If I flipped it around, I could run my middle finger across her pussy. I had a moment to decide if I was that bold. She had already knowingly put herself right on me. So I did it.

I flipped my hand and pushed my middle finger into her. Immediately I felt the outline of her pussy under her shorts. Her lips opened up around my finger as I curled it upward. My blood ran hot and was rapidly heading to my dick. She didn’t flinch.

Click.

Yay!! Good job everyone! Someone shouted. My SIL stood upright and started talking with another family member. Everyone else equally started to chat and scatter off.

It was so unexpected and quick. It was clearly intentional. There’s no way anybody else saw it happen in the chaos. I was in utter disbelief, but I acted like nothing happened and headed back inside the house.

My SIL and I never brought it up to each other but it turns me on so much to think about. I wonder if she thinks about it while she touches herself. Maybe I’ll ask her one day.