She is qualifying herself to you. Accept her qualification before you tease and banter. Don't tease her on not being a player. Tease her on other topics so you can make her commit that she's fun and adventurous so you can f-close her the soonest.
Being not a player is supposed to be a good quality among women. Get her to commit in writing that she's the type who goes for commitment and loyalty while still remaining a fun and adventurous person.
What is a boring topic is a matter of perspective. You should always see this perspective from the eyes of the girl.
