Naomi and Ely have been best friends forever. Naomi loves and is in love with Ely, and Ely loves Naomi, but prefers to be in love with boys. So they create their "No Kiss List" of people neither of them is allowed to kiss. And this works fine - until Bruce. Bruce is Naomi's boyfriend, so there's no reason to put him on the List.
David Levithan won the Lambda Literary Award for his debut novel 'Boy Meets Boy', but is probably best known for his collaborations with John Green ('Will Grayson, Will Grayson') and Rachel Cohn ('Nick and Norah's Infinite Playlist', which was also made into a movie). As well as being a New York Times best-selling author, David is also a highly respected children's book editor, whose list includes many luminaries of children's literature, including Garth Nix (author of the 'Troubletwisters' series) and Suzanne Collins (author of 'The Hunger Games' series). He lives and works in New York.