Twenty-Eight: Dear Ali, Be Mine.

After school the following day, Ali leaned toward the front window of Cassie's Jeep as Cassie made a screeching turn into her neighborhood. Her neighborhood on the corner was out on his riding mower, making perfect stripes on the lawn. The little kids across the street were playing basketball t the lowered hoop. And at Mona Vanderwaal's house, Mona, Phi, and Chassey were strutting up and down the driveway in some sort of ugly-girl fashion show. Ali wrinkled her nose.

As Cassie rolled toward Ali's house, she turned to her and smiled. "I'm glad you took me up on the ride today. Was your brother busy?"

Ali shrugged. "Jason and I aren't exactly speaking right now."

Cassie's lips curled into a smile. "Want to run interference?"

Ali pretended to laugh, not wanting to get into exactly why they were fighting. She hadn't said a word to Jason since he'd told her that he thought it was a good idea the family was bringing her twin home, and it just seemed easier not to accept rides from him, too.

Cassie then turned and peered at the curb in front of Ali's house. "Do you have plans?"

Ali followed her gaze. Emily was standing at Ali's mailbox, putting something inside. But when she saw Ali, she quickly closed the box and stepped away from it as though it were on fire.

"Not that I was aware of," Ali murmured, a little annoyed at Emily's presence. Before, when Em showed up unannounced, it was welcome. But now, after everything that had happened, it felt sort of...intrusive. Clingy.

Cassie pulled to the curb. Emily stood with her arms at her sides, a timid smile on her face. She made no move to approach Cassie's Jeep, perhaps waiting for Ali's permission or introduction. Ali just turned to Cassie and gave her a huge hug. "This was so much fin," Ali said. Then she eyed Cassie's pack of Marlboro Lights. "Can I have one more for the road?"

Cassie raised her eyebrows. "Naughty girl, smoking on your own property! What if your parents see?"

"I don't care," Ali said.

Cassie lit the cigarette for Ali, and Ali took a big puff, trying her hardest not to cough. Then Cassie gave her a spritz of Dior perfume and took off. Ali stood with her back to Emily as Cassie turned the corner out of the development. Then, finally, she turned back to her mailbox.

"H-hey," Emily blurted. "I'm sorry."

Ali sank into her hip. "Sorry for what?"

"Interrupting. It seemed like you and Cassie were having fun."

"Uh-huh." Ali flicked the ash. "She's awesome."

Emily's gaze fell to the cigarette. "You guys smoke?"

Ali shrugged. "So?" She exhaled.

Emily swished the smoke away, then looked embarrassed by the gesture. "I just thought...I mean..."

Ali tapped the mailbox. It made a hollow, metal sound. "So were you stealing my mail, Em?"

Emily's mouth fell open. "No! Absolutely not! Actually, I—"

"Because that's a federal crime, you know," Ali interrupted. "You know what else is a federal crime in some states? Kissing people in tree houses."

Emily's eyes widen. She took a small step back.

Ali breathed out. "I'm kidding."

"Oh." Emily licked her lips. "I knew that."

She turned back to the mailbox, running her fingers over the plastic red flag. A plaintive look settled over her features, and she took a deep breath as if she was about to say something important. All of a sudden, Ali had a horrible thought: What if Emily wanted to talk about things? What if she wanted to, like, get all touchy-feely—literally?

"You know what would be awesome?" Ali cut her off before she could speak. She pointed to the girls down the street. "If you told Mona to stop catwalking. She's giving fashion a bad name."

Emily frowned, then gazed at the girls, too. "Now?"

"Uh-huh."

A pained look crossed Emily's face. "Ali, I really don't want to."

Ali lowered her chin, anger at Emily's disobedience curling through her veins. "Oh, Mona!" she called, sotto voce. "Guess what Emily likes to do in trees?"

Emily's eyelashes fluttered. She opened her mouth, but no sounds out. "Okay," she squeaked, ducking her head and trudging down the sidewalk.

Ali trailed behind her, watching as Emily intercepted the girls. At first, Chassey's, Phi's, and Mona's lit up when they saw Emily coming. They closed in around her in the same the alpacas at the garden center Ali's mom always dragged her to flocked around people at the fence. Even though Ali was standing some distance away, she could see the precise moment when Emily delivered the blow. Mona's mouth clamped shut. Phi puffed out her cheeks. The corners of Chassey's mouth turned down. She almost looked like she was going to cry.

Emily stormed back to Ali. "Well, I don't think they're going to be catwalking anymore."

"Thank God," Ali said. "They were totally bringing down the whole neighborhood, don't you think? Good work, Em."

Emily glanced up at her, her chin wobbling. "How's it going between you and that guy?"

"What guy?"

"You know. The one you told me about. In the tree house. The boy you like."

Ali pressed her lips together. She'd refrained from sending Nick too many begging texts because she didn't want to sound desperate, hoping that he'd come to his senses instead. Only, he hadn't. And when she tried to send him an IM last night, he blocked her from his list.

"Things are going great," she said, smiling broadly.

Emily's throat bobbed. Her gaze darted to the mailbox again. She lunged for it and opened the little door, the metal squeaking. Ali put a hand on her arm. "What you doing?"

Emily blinked. "I..."

"Tampering with mail is a federal offense, Em," Ali said in a saccharine voice.

Emily nodded, then wheeled around and walk-jogged to her tipped-over bike and threw her leg over the bar. "I should go." Her gaze didn't leave the mailbox, which she hadn't closed properly. A single letter sat inside. "I'll see you later, Ali."

Ali watched her pedal down the street, then turned toward the mailbox. Her fingers curled around the long, then envelope. It had Ali's name on the front in Emily's handwriting. She waited until Emily's reddish-gold hair disappeared around the corner, then tore it open. It was all one paragraph, the writing on both sides of the page. Emily's print seemed more harried than usual, as if she had written it quickly, before she lost her nerve.

Dear Ali,

I need to get something off my chest. I know I told you that the kiss we shared in the tree house was a joke. But it really wasn't. I meant it for you and only you.

Ali lowered the letter to her waist for a moment, a strange taste in her mouth. She had a weird feeling Emily might have wanted her to read this in front of her so she could explain it, line by line.

She scanned the rest of the letter.

I'm so thrilled that we're friends. I love staring at the back of your head in class, I love how you chew gum whenever we're talking on the phone together, and I love that when you jiggle your Sketchers during class when Mrs. Hat starts talking about famous American court cases, I know you're totally bored. I don't want anything to come between us, but I don't think it well. You felt something, too, didn't you? I could tell.

Ali shut her eyes and took a few deep breaths. When she opened them one more time, she read the rest.

...and I've done a lot of thinking about why I kissed you the other day. I realized: It wasn't a joke, Ali. I think I love you. I can understand if you never want to speak to me again, but I just had to tell you.

—Em

When she finished, she folded the letter in half and pressed it deep into her pocket. But then, because that felt too intimate, she pulled it out and shoved it into the bottom of her bag, under her math book. She pulled out her phone, ready to compose a text to Emily saying something like, I found your letter, weirdo. Ha ha, funny joke. Except maybe it would be better just to not acknowledge it at all.

She threw back her shoulders and walked into the house. As soon as she stepped through the foyer, the hair on her neck rose. Something felt different. The knick-knacks on the table in the hall were the same. There were two caps and gowns hanging on the banister, a blue one that was Jason's, and a white one for her own seventh-grade graduation. Her gaze fell to a flowered suitcase on the ground. It was her suitcase—from back when she was Courtney.

She smelled freshly brewed coffee and baked cinnamon rolls, the thing her mom always made for her when she was little and needed cheering up. It was what she would make for her, not her sister. Her sister, in fact, used to complain that cinnamon rolls made her teeth hurt.

All at once, Ali knew what had happened. But this couldn't be happening. This wasn't supposed to happen until tomorrow. And then she thought about Mona and the others hanging out in the driveway, Emily lurking near the mailbox. When had she gotten here? Had anyone seen?

Her first instinct was to run up to her bedroom and never come out, but then her mother stuck her head around the corner and smiled. "Ali?" she said gently. "Your sister's home."