[M/F] Fucking my female friend’s sister

So, this happened last year exactly on May 3rd. That day it was Ethan's (who's one of my best friends) birthday, and he was having his birthday party that day, but it wasn't at his house. In my group of friends we have Christine, who is the hostess to almost every party we have. Her place is huge and her parents don't mind having a bunch of drunk youngsters at their house. Everyone was looking forward to this party as Ethan promised we were going to have the time of our lives.

It was 8:30 PM and we're all at Christine's house. There were around 8-12 people in the house. Now, here's the interesting part. Christine has an older sister, Denisse. This girl is a perfect 10/10. She's 5'5, black hair, caramel skin, and the hottest body I've seen. That day she didn't have any plans and decided to join us at the party.