I have a tight network of friends, we hang out all the time. In 2018 we rented a house in southern France and we decided to head there for two weeks. I went by car and took my best friend Becky with me... we’ve been friends since Uni so that’s over 10 years. Becky brought Hanna her younger sister ( she’s about 24) along who I’d seen many times from family gatherings etc but I’d never really got to know her. We live in the North of England so it wasn’t practical to make the journey in a single day so we decided to get somewhere to stay around Paris to break up the journey. We did find a place and it was cheap and cheerful and we ended up in one room - with two double beds - Becky and Hanna in one and me in the other. Hanna showered first and I stood with Becky hanging out of the window watching the traffic go by below on a barmy evening. Hanna emerged wrapped in a large towel and Becky headed into the bathroom. I stood by the window talking to Hanna. She was playing with her hair and then sat down on her bed. She then got a small pair of knickers and put them over her feet as she pulled the knickers up she opened the towel, spread her legs, flashed a very hairy pussy and pulled her pants up, immediately looking to see if I’d looked. I’d caught a right eyeful and that was clearly her intention. I was embarrassed but, she quickly said did you like that? Before I could answer she’d dropped her towel down to display her breasts, they were small but had large puffy nipples. Her being Becky’s sister made it feel wrong but it only added to the excitement. Hanna was a tease she smiled, pulled her towel up and simply said, ‘later’. I just knew she was going to fuck me on the holiday... I could just see how hot she was. Nothing else happened that evening but the tension was acute and I was so turned on. We arrived in Brive the next day and our house was lovely, with a pool. Hanna took things a stage further... but I’ll save that for tomorrow.... She’s a very naughty girl....