For those who didn't read 'Broken Families' here's a summary with the important things to understand the sequel:
Castiel and Jimmy are twins.
Castiel's parents died so he lives with his brothers (Gabriel, Lucifer and Michael)
Sam is Castiel's boyfriend. Dean is Gabriel's boyfriend. Balthazar is Jimmy's boyfriend.
By the end of the prequel Sam and Dean went to live with Castiel and his brothers.

If you want to know more you should read the story from the begining.

United Families

Sam and Castiel went to a coffee house in the town's centre for a snack. They sat at a table in which Sam put his wallet over it as they ate. By the time they finished eating a little boy passed by their table and took Sam's wallet. The kid ran and Sam went after him, but when he got out of the coffee, the kid was gone. Sam looked for him in the nearest places but he didn't see him.

"Damn it," Sam whispered, upset.

"Did you find him?" Castiel asked when he met Sam outside.

"No," Sam answered, still looking for the kid.

"Forget it..." Castiel grabbed him by the arm gently. "You didn't even have much money in it."

"I know. But still... it was my wallet."

"It'd be worse if it was mine..." Castiel said with a little smirk on his face. "I'd be without my license and then who would take the car?"

Sam rolled his eyes. "Like you never drove without license..." He showed a little smile.

Castiel snorted. "Come on, we better go home before someone come in and see we aren't there."

"By someone you mean Michael," Sam corrected him.

"Yeah..." Michael kept being overprotective.

They were usually the first to come home after school, Sam had lost the year and Castiel repeated last year of high school too to get better grades. Dean left his job as mechanic around 7pm. Michael came home by 8pm, Lucifer too and Gabriel didn't have a regular shift.

After Balthazar got better, he and Jimmy got in a Police Academy. Michael didn't like much the idea; for years he thought their brother was dead and when they finally found him, he wanted to leave again. But then he accepted. Castiel wasn't very happy either, he missed his brother, but mostly he supported him. Besides, sometimes they came home at weekends.

When Sam and Castiel got home they decided to do their homework, but it was hard; they couldn't find the right answer for a question.

"How is this easy?" Sam asked looking at the book, sat on the bed.

"For teachers everything is easy," Castiel said from the desk. "Let me see, maybe I can find an answer." Castiel approached Sam, asking for the book.

"Wait. I think I got it." Sam hid the book behind his back so that Castiel couldn't reach it.

"Okay, then let me see it." Castiel tried to reach out the book. He kneeled on the bed in front of Sam. "Give it to me."

Sam, with a free hand, grabbed Castiel. Then he let go of the book and made Castiel lie on the bed. Sam was on top of him, smiling. His hands grabbed Castiel's body by the hips as he kissed him tenderly.

They stood like that for a while. Although they had other things to do, Castiel didn't complain.

"Weren't you supposed to studying?"

Sam and Castiel looked at the door and they saw Dean, who had entered the house without them noticing.

"We are." Sam showed him the book.

"Hum-hum." Dean said sarcastically.

"We were researching," Castiel added.

"Yeah, I can see that," Dean said, still ironically.

"It's true. We were just..." Sam tried to explain.

"I don't wanna know," Dean interrupted him. "I'm going to take shower." He left their room.

Then Castiel felt his phone vibrating in his jean's pocket. He had gotten a text. After reading it, he called "Dean."

He jumped out of the bed to meet Dean, the text was for him.

"What?" Dean appeared on entrance of the room.

"I got a message from Gabriel. He says he's coming home earlier, and... he says..." Castiel trailed off. "Sorry, I can't say this." He said a bit embarrassed and he showed Dean his phone.

Dean smiled as he read the message.

"What is it?" Sam asked confused.

"Apparently, I'm going to have company... in the shower," Dean said.

"Okay..." Sam said like 'I didn't need to know that'.

"Why did he texted me, anyway?" Castiel asked.

"Oh, my phone ran out of battery," Dean explained.

About 20 minutes latter Gabriel got home.

"Hey kiddos," he greeted when he passed by Castiel's room where he and Sam where studding, actually studding.

"Hey," Sam said.

"Gabriel, please don't send me messages like that again," Castiel said a bit upset.

"What? Too shocking for you, little bro?" Gabriel joked.

"No. I just don't need to know the things you plan to do with Dean."

"Speaking of which, where's Dean?"

By the time Gabriel finished the sentence Dean came behind him and hugged him. "Hey baby." Dean kissed him on the neck. "Did you miss me?"

Gabriel turned around and kissed Dean's sweet lips. Gabriel pulled Dean out of his brother's room before Castiel started complaining.

"I miss you all the time." Gabriel whispered to Dean's ear before he kissed him again more violently.

Then Gabriel jumped into Dean's arms. Dean took him to the bathroom where they took their clothes off and had a hot, sensual, long shower sex.

Half hour later Michael came back from work as lawyer. Lucifer came soon after and it didn't take long for them to be arguing. But no one cared anymore; it was how they were.

After dinner Castiel got a call from Jimmy, he used to call whenever he could. Castiel went to his room to talk with his twin alone. At some point, after telling the news to each other, Castiel noticed his brother was strange.

"Are you okay?" Castiel asked.

"I'm fine." Jimmy took a while to respond, maybe because of the sudden change of subject.

"You know you can't lie to me. I can't see you, but I know something's going on." All Castiel heard was Jimmy breathing. "What's wrong?" Castiel insisted. But Jimmy did say anything. "Let me guess, it's Balthazar."

"It's just... He has been odd lately... distant." Jimmy sighed. "I think... maybe... he doesn't love me anymore."

"No, it can't be," Castiel tried to reassure his brother. "We both know Balthazar... He is practical. So if he didn't love you, he would have broken up with you already."

"That's not comforting, Cas," Jimmy sounded a bit angry.

Then he saw Balthazar coming into the room they shared with other guys, but at that moment Jimmy was alone in there.

"Then talk to him... To be sure," Castiel suggested.

"Yeah, okay," he said as he saw Balthazar approaching the bunk he was sitting on. "I gotta go. I'll call you tomorrow."

"Okay. Bye."

"Bye." Jimmy hung up.

"Who was it?" Balthazar asked.

"Cas..."

"He's okay?" Balthazar asked because Jimmy didn't sound very happy.

"Yeah, he's fine. They're all fine." Jimmy smiled a little.

Balthazar looked at him, studying him. Jimmy's forced smile faded and then he exhaled deeply, never looking at him.

"Okay, what did I do?" Balthazar asked suddenly.

Jimmy looked surprised at him.

"I know you well enough to know you're upset with me." Balthazar explained. "I know the look. Cas used to look at me like that. And you aren't that different. So what did I do?"

"Nothing." Jimmy answered instantly. But then he stood up suddenly. "It's just... Since we got here, we don't spend much time together. We're always training and there are a lot of people there... but when we have a free time... you go play with the guys."

Since they got there they had made some friends, the other guys were nice and sometimes they invited them for games, after dinner.

Balthazar took a moment to get the point. "I don't believe you're jealous..." He said a bit amused.

"I'm not jealous."

"It was just a game... Nick planed it last weekend."

"Well I have plans too." The words came out of his mouth without his knowledge.

Balthazar raised an eyebrow. "Look, I'm sorry," he said grabbing Jimmy's forearm. "I am free now." Balthazar pulled Jimmy gently to him. "So why don't you tell me what plans do you have in mind." He talked slowly as he got close to his boyfriend's lips.

Balthazar gave him a quick kiss at first to see his reaction. As there was no objection, he carried on with deeper and more passionate kisses. "Something like this?"

Jimmy smiled. "Close enough."

Balthazar sat on the lower bed of the bunk, with his legs stretched on the mattress. Jimmy sat on his lap with Balthazar's legs between his. Their lips met again and Balthazar passed his hand over his boyfriend's body. The heat was rising up inside Jimmy, and it was even more intensified when Balthazar started rubbing his crotch.

"Don't start, if you're not going to finish it," Jimmy told him.

"Who said I wasn't going to finish it?" He kept touching Jimmy's intimate parts.

"What if someone comes in?" Jimmy asked breathing hard. The longer it took, more likely it was for them to be caught.

Balthazar looked at him for a second. "They would see how aroused you are, and how you want and need this desperately, Jimmy boy." He whispered seductively.

Balthazar was right, so Jimmy gave in, kissing his boyfriend. Balthazar slid his hand inside Jimmy's pants to touch his sensitive skin. Then Balthazar started stroking, making Jimmy moan softly.

As it got faster Jimmy started moving uncontrollably. The moans turned into little screams, and Balthazar grabbed him by his white t-shirt and kissed him so the screams weren't audible outside the room. Jimmy put his arms around Balthazar's neck to give him some support and then grabbed his hair. As he reached the maximum pleasure, an explosion of heat came through him. He tried not to make much noise and Balthazar also helped.

Then Jimmy leaned to his boyfriend's chest to catch a breath while Balthazar caressed his hair. "You're amazing... and I love you. Never doubt that."