just treat her as your friend, just as you talk to guys. nothing more infuriating to me when a guy just kind of looks over im in terms of interests, opinions etc. you know hes messing around with boys and then looks at you like a fuckable house plant.(guys who havent met me, but yet assume) its quite refreshing when someone approaches you and you actually enagage in a meaningful conversation. i just had one of those convos about my favorite musician which happens to be this guys fav musician too. i have never felt better because he actually listens to what i say, and vice versa.
so just be very chill and start talking abt something like a tv show or whatever u think she likes and dont show that youre nervous;)