Me and my sister touched ourselves to a nude of my brother (sister/sister. Or sisters/brother)

Me and my sister are very close, we talk about everything and are comfortable seeing each other naked and everything, but we've never done anything incestuous until now

It was the other night, everyone was in bed while we were watching Netflix and tiktoks in her room, after about an hour of that, she brought up that she had a picture of our brother naked and after a couple minutes of persuasion and curiosity eating me up I decided to look and id be lying If I said I didn't find him attractive- his build is my type and he has an impressive package to say the least

After a couple minutes of both of us oggling and giggling my sister started rubbing my thighs, adding to the arousal I'd started to feel especially after she started asking how turned on I was - i could tell she was enjoying how flustered the situation was making me but instead of answering her questions I just slid my hand underneath my shorts and she did the same

We had to struggle to stay quiet as we started touching ourselves slowly, and after around 5 minutes she pulled both of our shorts and panties down and started fingering herself hard. She finished shortly after that but I don't find fingering as pleasureful as rubbing so j carried on, with my sister holding her phone infront of my face with her wet fingers resting on my waist until I came, a little squirt coming out too

We've giggled and talked about it since and she's refusing to tell me how she got the picture and she's teased me for it ever since saying that I enjoyed it more than her and it's driving me insane, I've also since humped my pillow to the same picture on my own