What’s the fastest way to ruin a friendship?

Fall in love with your best friend.

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Story of a Girl by Sara Zarr 

When she is caught in the backseat of a car at age 13 with Tommy, her older brother's best friend, Deanna Lambert's teenage life is changed forever.  Even though she has only been with one guy, the kids in her small town label her the “school sl#t.” Deanna’s family, especially her father, treats her like they expect her to sleep with anyone she sees.  Everyone assumes the worst from her, so it’s hard for Deanna to believe that she can do anything right.

If you wanted to start a club at school and you wanted to make sure no one else was interested in joining, what would you call it?