I'm a freshman in high school (all boys private school and I just got on summer vacation) and there's this other kid in my grade with a hot older sister who just graduated high school. She is attractive and gets around and made a bet with her friends where the winner is whoever sleeps with the most guys during senior week (starts this weekend). I have never met this girl, but the kid in my grade (her brother) is all for me trying to hook up with her. I have the house to myself Saturday night and I could tell her brother to tell her I'm a sophomore who is going to be a rising junior. I was thinking about using the angle of "why not get ahead of your friends in the bet early on?" since senior week starts on the night I have the house to myself. The problem is trying to spark up a conversation via texting, snapchat, her brother (this option might not be the best because she might not want to sleep with a friend of her brother's), and any other standard option. I have never spoken or met this girl in my life, and I need to know how to not sound creeper but be direct enough to get her to come over on saturday to a boy's house that she's never met in her life.