Looking For a Story

[Johnny_Smith21]

Hey everyone. If this is not the right forum I apologize. I have been a reader here for a few years now, and a couple months ago I came across a story that was amazing and I enjoyed it very much. However I forgot to save it or add it so I went back but I couldn’t remember the name of it. I’d really appreciate any help I can get. Here’s what I remember. I’m almost positive it’s an incest/taboo story. It’s from the pov of a brother. It involves him, his sister and a friend. If I remember correctly, the 3 of them go to a party of some kind and there’s a sheet hung up on a wall in a building for people to watch strangers hook up. I remember the brother and sister end up there and the sister reluctantly agrees to fake it cause they were already seen. Once done, I think the brother comes out and the friend then takes him upstairs or at least into a bedroom and they hook up there as well. I don’t remember names, although if I’m correct, I think the sister was a blonde, this could be a mistake though.

Edit: I also have searched everything possible. I’ve skimmed the genre for hours. Searched in tags for multiple combos to see, and searched in the general search as well.