If she brings up a sexual topic without having been prompted or encouraged, or says the word "sex" in any context whatsoever before you have.
Also, anything she says her friends do is what she does. A line I have heard many times is "I have a lot of friends who sleep with guys at the club".
Also, anything she says her friends do is what she does. A line I have heard many times is "I have a lot of friends who sleep with guys at the club".