Because Dean was Dean, and Dean was a sly mofo, he got Cas to go on a date with him.
And then another date.
And another.
And another.
Until Bobby deemed them Destiel and started to wonder if this is how teenage girls felt about celebrity couples.
Dean still talked about Cas constantly at the garage, and Bobby didn't mind, of course. He was trying to encourage the kid to tell his mother about his supposedly amazing boyfriend, but the topic always made Dean squeamish and he avoided it. Bobby knew about Cas, and Sam did too because duh, they went to the same school and it was near impossible to keep anything from Sam. And neither one of them judged. They were just glad to see Dean happy. That's all they wanted, and it was all Mary wanted too.
Bobby was half tempted to tell her himself, but he knew Dean would never forgive him for it.
And then one Thursday afternoon, Dean walked into the garage and he nodded at Bobby.
"You were right," he commented.
"I'm always right," Bobby retorted. "What was it about this time?"
"You said I'd have to fight off cheerleaders to get to Cas, and you were right. They surrounded him today." Bobby set down his tools.
"Go on,"
Apparently a cheerleader named Hannah had gotten a crush on Cas, not realizing, of course, that he was hella gay and kinda unofficially dating Dean. But not many people knew Dean was gay either, so most people just thought the two were friends. Just two dudes being guys, two guys being dudes.
And apparently when one cheerleader got a crush on someone, the entire pack started examining the subject of the crush, picking out their pros and cons, flaws and perks, and rating of hotness. Cas must've passed their tests though, because next thing he knew, his normal seat in English was surrounded by cheerleaders, grinning and staring at him.
"....Hi?" He said awkwardly, a little afraid. Dean scowled at the girls. Cas was his. He had called dibs. BACK OFF. The cheerleaders had giggled.
"What are you doing on Friday night?" Hannah had asked.
"Nothing?"
"Well, Lisa's having a party," Hannah went on. "And we'd all really like it if you came." They nodded. "But especially me," She smiled.
"Oh," Cas's eyes widened. Sheer terror. "Um.....okay, I guess?" He glanced in the direction Dean could previously have been seen in, but his view was blocked by girls. "Can I bring a friend?"
"A friend?" One of them echoed.
"What kind of friend?" Another asked.
"Who is it?" Hannah questioned. "Lisa's party's are kinda exclusive. We can't invite just ANYONE."
"Uh," Cas stammered.
"Maybe he wants to invite his boyfriend," Dean piped up. The girls paused.
"That's a great idea," Cas insisted. "Can I bring my boyfriend? He's really hot, you'd like him." They blinked.
"Um...." Hannah blanked. "You know what? Forget I said anything." The girls scattered, leaving a frazzled Cas behind.
"Huh," Dean commented. "Bobby was right."
"I thought I made it obvious to people that I was gay," Cas said. And he technically had. There was a pride flag sticker on his laptop.
"Maybe it needs to be more obvious," Dean suggested.
"Okay, I'll start wearing my 'Have you heard the news? I'm into dudes' pin."
"Do you actually have a-"
"Yes."
"...Where did you BUY THAT, I WANT ONE."
"Everybody wants one." Cas grinned. "And are we going to ignore the fact that you called yourself my boyfriend, or.....?"
"Do you have a problem with it?"
"No. I have a problem if you don't call me your boyfriend though."
"So you want to be boyfriends?"
"I don't see why not."
"Okay... So then we're boyfriends?"
"Yep."
"Well that was easy."
"Yep."
Bobby thought that the idea of Cas startling cheerleaders was funny, and he secretly wanted to cheer at the fact that Dean officially had a boyfriend now.
But randomly yelling about that fact would be really weird and would probably freak Dean out, so Bobby just clapped him on the shoulder and said he was happy for him. And he was.
The next day, Dean got an idea. He had told Bobby practically everything he knew about Cas, but the pair had never met before. Dean thought he should fix that.
He didn't want to freak Cas out at the prospect of him meeting someone Dean considered family, but oh well.
"What are you doing after school?" He asked casually.
"Nothing," Cas smiled. "Why?"
"Care to take a ride with me? We could go to the movies or something, I dunno."
"Okay,"
"And I kinda want you to meet someone,"
"There's the ulterior motive," Cas declared. "Who is it?"
"Bobby."
"Bobby?" Cas tilted his head. "As in the Bobby that runs the auto body shop you work at?"
"Yeah,"
"Why do you want me to meet him?"
"Because he's important to me and you're important to me and I've told him a lot about you and I want you to meet him." Dean shrugged. "It's no pressure or anything, just thought it's an introduction that should be made."
"Okay," Cas grinned. "But then you have to meet my brother,"
"Uh oh."
"You started this."
"What have I done?"
"Exactly."
Dean took them to the auto body shop, realizing halfway there that Cas had never even been there before. The shop looked a little dingy to someone who had never seen it before, he supposed, but Bobby's was like a second home to him. It was perfect in his eyes.
"BOBBY!" Dean yelled as they walked in.
"Back here, kid!" Bobby called from the back. Dean followed the voice and Cas trailed behind him curiously. They found him working under some minivan.
"Busy?" Dean asked.
"Always working, kid, always busy."
"Well then wipe the grease stains off and get up. I brought you a visitor."
"Is it the health inspector?"
"No,"
"Then do I really have to get up?" Dean kicked lightly at Bobby's feet.
"C'mon Bobby, it's important," Bobby groaned and slid out from under the car, glancing up at them. His eyes stopped on Cas and he grinned.
"You must be Cas," He commented.
"Yep," He smiled. "How'd you know?"
"Boy's talked about your freaking eyes so much he's got me thinking the sky is the wrong color," Bobby insisted, throwing a rag at Dean and standing up. "Nice to finally meet you in person,"
"You too." Bobby could see why Dean ranted about the boy so much. He was nice, and meeting the infamous Cas in person only made Bobby like him better.
Especially when he noted the way the two boys looked at each other. Dean looked at Cas the same way he looked at his car, and Bobby knew all too well how much Dean loved his car.
And it seemed to him that Dean loved Cas just as much.
Oh yeah.
Destiel was definitely his new favorite thing.