[M]y girlfriend (19F) and I (26M) holidaying in Sicily… with her brother (22M)

This is a true story. Took place some years ago in Italy, with my girlfriend of that time. Ages correspond to that time.
It was approaching the heart of mediterranean summer. Lots of heat, bright sun, relaxed atmosphere. People in positive, cheerful mood. Taking it easy in the day and partying in the night. The summer night. By that time I was already dating my girlfriend for 6 months. Having lots of fun and lots of mutual sexual exploration. Awesome sexual chemistry. I happened to be her first. Let’s call her Maria. An Eastern-European black-haired beauty. I have given her physical description in my previous story:
[https://www.reddit.com/r/sexstories/comments/seadd1/my_first_successful_and_complete_handjob_a_girl/](https://www.reddit.com/r/sexstories/comments/seadd1/my_first_successful_and_complete_handjob_a_girl/)