F Buddy?...Need some advice O_O?

So in general this girl i know and im pretty good friends with just got out of a relationship but we are both really pervy and we have pervy conversations on facebook but i don't really want to date her or anything. Im just not looking for a relationship right now but i enjoy talking to her and everything. Im starting to get the feeling she might want to date and if i say no she might get upset. How should i handle the situation. I mean she never said anything about having sex but she says things that elude too it but we both enjoy the conversations I just don't want things to go really far but sometimes i think they might and if they did i would consider not really a relationship but a F**k buddy. Would this be wrong or is it ok as long as were both fine with it...im just kind of lost right now lol