Hi brother! It looks like I've made up my mind to do what you asked of me. I mean, I have to admit, it was a bit weird for you to ask that, but I perfectly understand your situation. I've been like you, until I got my first boyfriend, I had the strange idea in my head that nobody will like me and so on. That's just lies you tell to yourself because you don't know how to have a relationship with somebody. That's why I accepted to do this simulation, where I can role-play as your girlfriend so you can see how it goes, and not be anxious when you'll be with your new girlfriend. It's not a big deal, she'll probably be scared too, she'll know you're a virgin and she'll have no idea how sex will be with you. You have to act mature, not cum in your own pants when you see a pair of boobs. Girls like you to last long, and even if I'm your own sister, I'm going to prepare you for this.