The rest of the book deals with the two trying to make the unique circumstances of their relationship work while Ellie also tries to come to terms with some secrets from her past.
I have read quite a few of Jennifer E. Smith's books now thanks to a sale at Books a Million a few months back, and I think This is What Happy Looks Like is my favorite because of its ending. I thought Smith wrapped up the story perfectly without succumbing to the trap that happens so often with young adult book authors where they need to tie up the story at any cost—even if it's extremely unrealistic given the age of the characters.
I think Smith does an amazing job creating great male protagonists and Graham was, by far, my favorite from all of her books. I found him utterly adorable and charming and wise beyond his years—a consequence of his career I assumed, and trait that I found quite believable. If you are looking for a lighthearted, romantic young adult book, this is it.