In Chapter 14, what is happening to the relationship between Rose and Mason?

Rose and Mason have been good friends for a long time. In Chapter 14, Mason defends Rose from a couple of boys who are making lewd comments to her. Mason likes Rose, and wants to be more than friends, but Rose has a crush on Dimitri. Rose flirts with Mason a little, and uses him to convince Christian to bring her a box of books written in the days of Vladimir.