My girlfriend wants me to have sex with her but I don't know how to do?

Easy. Even though im 10 years old, i know exactly what to do. Go to a private room, lock the door, strip yourself or her all the way and the start kissing hungerly. Then touch her coconuts and suck them. Then go all the way down to her hole and start to rub hand around it. Say "are you ready?" and then point your thing to the enterance. Enter it slowly. Then, if she says so, f*** her hard and fast. After that, do whatever you want or stop.