Threesome with best friend?

Date: 4/14/2019

Me and my girlfriend wanted to have a threesome with our best friend so we went to a garden/museum/haunted house [kept changing] to find a place to fuck. We found a bathroom deep into the place, and decided on the shower there. We even found big warm towels for afterwards. We got naked and jumped in and I had fun teasing my girlfriend and fucking her a bit, before a lady that worked there caught us, and explained that we didn't have to leave because it's not uncommon for people to fuck there anyways. Our friend got out and we decided to condition our hair. The conditioner my girlfriend had was filled with locks of hair and magazine cut outs of eyes and lips and faces and even some of her face. I didn't know why she put them there but I didn't want to use that conditioner. Our friend handed me my own bottle, and started teasing me from behind when I bent over, I looked over and my girlfriend had her jaw dropped and was getting ready to jump in.