Since Scorpios are so sexual, it seems they always seem to talk about sex, yet they don't want someone slutty.

Do they like a girl to be able to keep up with these conversations or to be "innocent"?

Interesting question.
Scorpios are very emotional to the point where its very profound to even put it into words. To most of us, we use our bodies to express our love. We are sexual, but ONLY to the right person. Scorpios find people who take love "lightly" and/or have night stands DISGUSTING! We can't understand how someone would throw their love into anybody's hands. This is the reason why we constantly criticize other people's actions when it comes to love.

just be yourself

yes, I guess in a way I find myself on that subject alot and I do get told "That's not the only thing I want"....but really, the key is this...
ACT innocent on the phone and when it's mentioned, wave it off...BUT when you're alone DO THE DMN THING! If you can manage that balance, you will have a Scorpio ONLY WANTING YOU!

they like innocent and sexual, if they love you they want you to be able to keep up with their sexual pleasure.
when they are in love sex is 24/7 it's their way to show how much they love you.
others mostly say the word i love you but their do it by having sex with you.
they are water sign, they want someone not slutty but normal but secretly sexual. for like lady in the street and freaky in bed.

The scorpio I have dated I was 10X more sexual then them! I was lucky if I got some 2-3 time a week!

HolaRola's right. You'll only be happy in a relationship if you're free to be yourself.
You're proving it right now.... you like a certain Scorpio, so someone's going to like you....

Excuse me? I hardly ever talk about sex and I'm definitely a Scorpio.