Is there an exit door for the friendship zone?

So I've been hanging out with a girl from work for a few weekends now. But tonight she dropped the "it's so nice having a friend to go out with" bomb and I'm worried if I can bring it back to more than that. She's the most ridiculously sexy and funny person I've ever met. So now I'm at a loss. She uploaded a photo with me and literally put "love my bestie" as the tag