"Oh, Kendra, before I forget, Gavin asked me to give you this letter." He held out a gray, speckled envelope. "Happy birthday to you!" Seth exclaimed, his voice full of implications. Kendra tried not to blush as she tucked the envelope away. "Dear Kendra," Seth improvised, "you're the only girl who really gets me, you know, and I think you're very mature for your age--" "What about some cake?" Grandma interrupted, holding the first piece out to Kendra and glaring at Seth."