When Castiel wakes up, he feels something warm against his body. He looks over to see Dean smiling at him as Castiel leans against him. Castiel had nearly forgotten about the night before. The biggest reminders he has are his lack of shirt and the pounding headache from the liquor.
"Morning, Cas," Dean greets him. Does he look... Nervous?
"Hi," Castiel says quietly, sitting up straight and rubbing his eyes. He yawns, and immediately grips his head, the pounding intensifying.
"Hey, you okay?" Dean asks, clearly concerned.
"Is this what a hangover feels like?" Castiel asks with a nervous chuckle. "Note to self: don't drink on a school night."
"You really were drunk last night?" Dean asks. Castiel can't tell if he's hoping for a positive or negative answer.
"Kinda," Castiel admits. "Not black-out, forgetting everything drunk, but not sober, either."
Dean frowns. "You remember everything, then?"
Castiel nods. "Yeah, I think so. I mean, maybe I just think so because I can't remember what I don't remember, but I think I remember everything."
Dean looks down at the floor. "Want some Advil for your headache?"
"Um, yeah, thanks," Castiel says.
Dean gets up without a word and returns a few seconds later with a glass of water and two pills, both of which Castiel downs easily.
"Dean..." Castiel says, attempting but failing at not sounding awkward.
"Yeah?" Dean replies, not meeting Castiel's eyes."
Castiel stands up so they're almost the same height.
"Are you okay?" Castiel asks.
"Yeah, I'm awesome," Dean replies emotionlessly. "Why?"
"You just seem... Different," Castiel says. "Quieter. Reserved. Did I do something wrong?"
"I don't know," Dean says.
"What do you mean, you don't know?" Castiel asks, confused.
"I mean..." Dean sighs deeply, trying to find the right words to get his point across without sounding like a lovesick puppy. "You were drunk last night. You said it yourself. Do you think you did anything wrong?"
"I don't... I don't understand," Castiel says, tilting his head slightly in confusion.
"What I'm trying to say is, do you like me, or was that the alcohol talking?"
Castiel takes a step towards him. "Take a guess," he says quietly. He kisses Dean, wrapping his arms around Dean's bare torso, hugging him closer. Dean kisses him back, his hands on Castiel's waist. They pull apart finally, both of them smiling.
"I was hoping you'd do that," Dean admits.
"That's good, because otherwise, this would be awkward," Castiel replies.
The two gaze longingly into each other's eyes for a moment, until Castiel breaks the silence.
"What you told me last night..." he says hesitantly.
"Don't," Dean replies quietly.
"Dean-"
"What I told you last night, I have never told anyone," Dean says. "It's not something I've ever been comfortable talking about. No one knows about this besides you, and I'm trusting you to keep it that way."
"Even your brother?" Castiel says in surprise.
"Especially my brother," Dean says.
"I thought you two were super close, though."
"We are," Dean confirms. "That's the problem. How do you think he'd react if he saw this?" Dean gestures to the scars all over his body. "Or these?" He turns over his arms to reveal the freshest cuts. "Sam can't know."
"Dean, you can't just not tell anyone."
"Of course I can not tell anyone!" Dean replies. "If I told Sam any of this, everything would be ruined, okay? As far as he knows, I'm the happiest person in the world, never a single problem, and nothing ever bothers me. If he found out about this... It would reopen old wounds. He's moved on from what my dad's done. As far as he knows, I have, too. It's better that way. He doesn't have to worry about me."
"Well, clearly, someone does!" Castiel says. "This is not okay." Castiel takes Dean's arm, revealing his cuts again. "You need to stop this, Dean. Or I will tell Sam."
"Cas, don't," Dean says quietly. "Please, don't tell Sammy about this. I'm already broken, but he doesn't have to be! Just leave him out of this, please." His voice breaks, a tear slipping down his cheek.
Castiel pulls him into a hug. "Okay," he whispers finally. "But please, please stop this."
Dean doesn't say anything. It's not because he has nothing to say. He knows he could just agree with Castiel, so at least he's happy. But Dean can't do that. He can't say that, because he can't lie to Cas, and he knows that he would be lying if he did.
Dean drives Castiel to the diner so he can pick up his car to head to school with. Dean waits for him, and they arrive together. Dean, being way earlier than ever before because he left at Castiel's usual time, can park next to Castiel. He's never parked so close to the door before. The two of them walk into school together, and they don't want to leave each other when they get to their rooms. Unfortunately, due to the delay from stopping at the diner, the students will show up soon, so they have to.
The first person to show up is Jess. It's strange-Charlie has been first all year. Why would Jess be first today? She looks around anxiously before turning to Castiel. 
"Have you seen Sam yet?" she asks hopefully.
Castiel shakes his head. "No, sorry. I'm sure he'll be here soon. He's not usually this early."
She nods in acknowledgment and sits down at her desk. She crosses her legs, her foot bouncing around nervously as she stares at the door. Castiel watches her, wondering if he should ask what's wrong. Before he can, Charlie bursts into the room, a huge smile in her face.
"Sup, bitches?" she greets them, running up to Castiel excitedly. "So? How was your date? Tell me everything!"
Castiel can't help but smile back at her enthusiasm. "It went pretty good," he says. "He got me drunk and we hung out at his place."
Charlie laughs. "Seriously?"
"Yep," Castiel confirms.
"Did you guys..." she grins suggestively.
"Woah, slow down there, tiger," he laughs. "I just met the guy." Of course, that didn't stop them from going for it before Gabriel and Sam burst in.
"But you guys are so cute together!" she squeals.
"Actually, Dean's the cute one," Castiel corrects her jokingly. "I'm just sorta there."
Charlie slaps him playfully on the shoulder. "Stop that! You're lying to yourself!"
Castiel grins. "Thanks, Charlie," he says, glad she's in his class. She's one of the most positive people he knows. She's the type of person that would jam out in elevators, listening to music through earbuds so if anyone saw her, they'd think she's insane, and Castiel loves that about her.
"Oh!" She digs through her backpack and pulls out a few types papers stapled together. "I have another story! Ten thousand words, hell yeah!"
She holds it out to him, and he grabs it, turning it around so he can read the title.
"Sherlock? Nice." He scans the beginning of it, then groans. "Johnlock is fake. F minus."
"Johnlock is so real!" Charlie replies. "Have you seen the way they look at each other?"
"Oh, you mean like they annoy the crap out of each other?"
"Yeah, but in a cute way!"
"No! No, it's not! They're just friends! They are clearly just friends! John looks up to Sherlock. He's like a mentor to him. Sherlock hangs around with John because he needs someone to do stuff for him, and because he's never really had a friend before! That doesn't mean they're into each other!"
"No, it doesn't," Charlie agrees. "But the way that they act around each other? They totally love each other!"
"Have you even seen the show?" Castiel asks incredulously. "Sherlock barely treats John like a friend. It's part of the whole 'highly functioning sociopath' thing he's got going on."
"Are you freaking blind?" Charlie demands. "Anyone can tell just by-"
The bell rings, cutting her off mid-speech. Charlie returns to her seat as she does everyday. It's how the mornings usually go. Castiel looks around the class, counting the students to see if they're all here. Five of them. Yep, all-or not.
"So, what are we learning about today?" Gabriel asks.
Castiel sighs. "Seriously, what are you doing here?"
"Don't worry, I'm not here to annoy you," he assures him. "For now, anyway. Sam's in the gym. You might want to go get him. You might not, actually. I don't know. It's up to you." With that, Gabriel gets up and walks out the door, going back in the gym.
Castiel watches him go. What was that for? Curiosity baiting him, he follows Gabriel, looking for the one student that isn't there. He looks around the room, then notices Dean standing near the door, Sam in his arms. Castiel just stands there for a moment, not sure what to do. Ordinarily, he would have made Sam come with him, but now that he knows they're brothers, he isn't sure that's the right thing to do. What does he do now?