Because she is a chick..
I would recommend the Twins but because you are a virgin and men can be scarred by a bad first time experience it may be to epic for you.
Do the third one find your rythm then end it horribly so she wont want more. After you are condfident do the twins.
Yes it is a horrible thing I jsut said using Twins for sex but trust me young sex is better because you still do not know what sex smells like.
You are a smart guy it will turn out well for you.
Please Watch/Share this video so it gets shown in Hollywood.