Perfect Chemistry

Perfect Chemistry is the first novel in the trilogy written by author Simone Elkeles and published by Walker Books for Young Readers in 2009 and also made it on The New York Times Best Seller list. Perfect Chemistry depicts a high school romance between the main characters Brittany Ellis, a white uptown teenager, and Alejandro "Alex" Fuentes, a lower class teenager of Mexican heritage. The two must overcome Brittany's troubled home life and Alex's gang ties to have their own happily ever after. The book was read and reviewed worldwide.

Simone Elkeles has revealed in many interviews that she admits to writing Young Adult fiction Romance novels and with the Perfect Chemistry series she had to do extensive research to understand the cultural background of Alex's Mexican heritage. The book was followed by two sequels centered on the following Fuentes brothers, Carlos and Luis. The book takes place in Chicago, where the two must contend with gang fights, the mystery surrounding the Fuentes' murder of their father, and the world's outlook on their relationship.

Elkeles has stated that she would like to continue writing books in the Perfect Chemistry series.