Me and my best friend flirting?

Whoa!! Yeah no girl will say it's ok if you look at her naked, if she thinks of you as" just friends" and isn't interested in it going any further. She is definitely into it. If she ddnt like you, the she would be uncomfortable with mages Bc no matter how you slice it, a mage from a guy is usually intimate. Unless it's family, in which case, that's pretty weird. If you're into her, then go for it, cuz personally, me being a girl, I think she is sending all the signs of "let's get together, yah yah yAh!" good luck man:)