This is what Happy Looks Like by Jennifer E. Smith
“What do you mean?" he asked, his voice hoarse, and she sat up, turning to face him with a serious look. Her green eyes were large and her red hair was tangled from the wind, but she looked beautiful, the kind of beautiful that makes your heart fill like a balloon, so light you worry it might carry you away.
Ellie O’Neill and her mother live in a tiny Maine village, running a kitchy souvenir-type shop, hiding their secret.
Graham Larkin writes an email about pig-sitting to a friend, accidentally mistyping the address, and ending up meeting Ellie online. Graham too has a secret.
Ellie and Graham become friends online, but when they meet each other, their secrets threaten to separate them forever. Graham is actually Graham Larkin, the newest boy star and heart throb to hit the box office. Ellie in no way wants photographers hanging around or taking her picture.
Even after they meet, have problems, become sorta-friends, they continue the emails, which now become pretty funny. In fact, clever retorts are the name of the game in person too. Even with the predictable plot, you have to really like both teens.
This incredibly sweet romance will never make it to the Sex in the Library archives, but will be a huge hit in the pre-teen crowd.