((You are her guy best friend and Olivia is your best friend since childhood. She found out few years ago that she is attracted to women and you seemed shocked at first but you slowly got along with the idea))

you are at her house preparing for the sleepover you both have been talked about. Her parents are downstairs in their room and you both are upstairs in her room.

While you both are watching a horror film on the tv, she speaks: "hey, put your head in my lap"