"Mr Davenport!" Bree called into the living room. "Tasha!" She had been feeling really shitty for the last five days since Owen dumped her, and she didn't know if she was supposed to be ready, she just knew she felt ready to go out with her friends.

She found Chase on the couch as she came into the living room. "Hey Chase," she smiled and her little brother seemed to notice it. The washed hair, the smile, he smiled back.

"What's up?" He asked.

"Have you seen Tasha or Mr Davenport? Caitlin and the girls are going out tonight after school and I know it's a school night, but do you know if they're in a good mood?"

"I think so," Chase nodded, "They're just in the –" just as he was explaining, the elevator doors binged and suddenly Bree's father and step mom walked into the living room. Bree smiled at them and walked over.

"Hey!" Tasha looked at Bree, "I love your hair today!"

"Thanks," Bree smiled and felt herself blush a little. The only difference was she had actually washed it, but it felt nice to be pretty again. "Look," Bree began, chewing her bottom-lip absent-mindedly as she thought. She so desperately wanted to go to this; as much as she loved her family, she needed a proper blow-out night of fun to dress up and go out. "Caitlin and the girls are going to this party tonight at this dance club. It's under eighteens only and they'll be no alcohol, can I go?"

There was a hesitant moment as Bree's father thought, then he shared a look with Tasha, then to Bree's delight he nodded.

"I don't see why not," he said and Bree had to contain her squeal, "Although be back by nine because it's a school night. And if we have any mission alerts today, I'm afraid that'll have to turn into a no. But otherwise it's fine."

Bree leapt forwards and hugged him properly, "Great! Thank you!" She was finally starting to feel like her bouncy old self again. Now she turned to her step mom. "Tasha, will you help me pick out my outfit?"

"Oh my God, yes!" Tasha nodded, "Let's go!"

Chase arrived in the lab and got out his binder, flicking through the pages to doublecheck what came next. So far, everything was going according to plan. His job as loving, protective brother was currently on hold and for now he just had to wait it out. Bree would go out with her friends and hopefully she wouldn't run in to Owen; hopefully they could move on to stage six without trouble.

The only problem was, should Bree run into Owen again, he needed to compile a list of possible rebound crushes for Bree that he, Adam and Leo all deemed appropriate from their school. He wasn't one, usually, to mess with his sister's love life like this, but the right kind of guy had to be picked. It needed to be someone who was the same level of statistical attraction as Owen, but who was better than him in a way that made Bree not want to go back to her ex. He could think of a few, mostly slightly nerdy, music types, but there were one or two boys on the football and basketball teams that Adam and Leo had connections with; they would set one of those guys up with Bree if it came to it.

Chase stopped. He took a moment to think, to wonder if this was weird. But, of course, it wasn't. This was logical and statistical, it made perfect sense. Plus, he was definitely helping Bree. With the added aid of his written plan, he had noticed a quicker rise in Bree's happiness than with the break-ups where Chase didn't have it.

Yes, Chase was helping. This was all going to plan. He just had to be upstairs to make sure Davenport, Adam or Leo didn't make an accidently hurtful comment on what Bree was wearing. She couldn't afford to lose more confidence, especially not tonight.

So, Chase waited. When it was time for Bree to go, he pretended to be nose deep in a book on the couch. Luckily, Adam and Leo were nowhere to be seen and Tasha could be trusted. But he still kept an eye on Davenport.

"Well," Bree appeared in the hallway; she twirled, "What do you think?" She was wearing a mini-skirt, with black boots and a blouse; she honestly looked really nice. But he saw Davenport looking in slightly horrified disgust at his daughter wearing a mini-skirt that short. Chase walked over to him.

"Let it slide and I'll clean your bathroom for a week," He muttered; Davenport nodded. Thankfully Bree had been too caught up with Tasha to notice the boys' conversation.

"You look lovely, Bree," he smiled, then pointed a finger at her, "Remember, back by nine." Bree rolled her eyes and Chase smiled – she was back.

"Right," Bree smiled at herself, then patted down her pockets, "Ah shoot, I've left my phone in the lab."

She supersped down to the basement to find it and Chase barely got another word out before Bree came back up. Her hair was slightly flustered and she stared at her brother, slightly exasperated.

"Chase," she sighed, "Could you help me find it with your signal locator app or something? That's a thing, right?"

Chase laughed, "Sure," and he followed his sister into the elevator.

Bree was absolutely fuming. She had never been madder at either of her brothers. Ever. She had never been madder at anyone. Well, that might have been a lie; they had faced a lot of pure evil forces before. But this was something else. She didn't know who else was involved in this, but one thing she did know is that it had Chase written all over it. A binder, a binder for God's sake with a pun title containing her name and – oh, and the fact that it said 'Theory Created by C. Davenport" on the bottom, so unless she had a really creepy, secret stalker sister, Chase had some explaining to do.

"Right," Chase walked out into the lab, "Let's see if I can find your phone." He moved two fingers up to his temple as they walked in the room, but Bree slapped the back of his head. Hard. "Ow!" Chase jumped, "Bree!" He whined, "Why did you do that?"

She grabbed him by the arm, purposefully dug her nails in and dragged him to the cyber desk. She looked at it, his stupid little pet project and Chase looked at it too. He gasped.

"Oh," he hissed, "You're mad at me." He ran a hand through his hair, "You weren't supposed to see that," he tried gathering it away, but she hit his hand.

"You've got some nerve!" She shouted, "What the Hell is wrong with you?" She had already speedread all of this. "Named, colour-coded stages to my processing time?" She folded her arms, "Plan Bs in case Plan A doesn't work!" Chase opened and closed his mouth, "And," she was seething, "A list of boys at our school that you think is…what? Appropriate for me to date?" She scrunched the list and tossed it at her brother.

"Bree," Chase began, "Look, I'm sorry, I didn't mean for you to find out, I was just trying to help fix you, I –"

"Shut the Hell up, Chase!" She practically screamed, she did it louder for his bionic hearing, "You're only sorry because you got caught! And what? It was to fix me? You think I'm broken! I get dumped once by one boy and suddenly I'm broken so my "genius" brother has to swoop in and save the day?"

"No!" Chase defended himself, "No, Bree, I don't think you're broken, that's not what I meant! I was only trying to help!"

"Well help by staying away from me!" She had never felt more betrayed, not even by Owen. She loved Chase, she always had but now he had observed and created theories on her? It was a total invasion of her privacy! She felt the stinging lump of hot tears swarm at the back of her throat.

"Bree," Chase's expression softened, "I didn't mean to make you cry."

"I know!" She spat, "It says it right here in my fourth stage you evil little brat!" Chase widened his eyes a little. "You are so selfish, Chase!" She wanted to run a hand through her hair, but she wasn't going to let Chase ruin her night. She needed to get over this and she thought Chase was helping. "You know," she was calmer now, she choked back her tears so she wouldn't ruin her make-up, "I thought that you actually cared about me."

"I do!"

"No, you don't," Bree told him, "I thought you wanted to help me get over Owen, I thought that you were sacrificing your time for me, I thought you were trying to be there for me when I already felt betrayed." She scoffed, "But you, you Chase were just turning me into your own personal lab rat!" Chase opened his mouth to defend himself or say something again, but she shut him down and sniffed, "And it hurts, Chase, it does." she told him, "I've had it with you. You're always so unbelievably arrogant and selfish, you think you can do anything to anyone and it won't have any consequences!"

"Bree!"

"Shut up!" She shouted, "This is not the way that siblings treat each other, Chase!" She shook her head, "But, you know what, fine. Have it your way. If you want me to just be a lab rat, then I will. Forget it, Chase. We're not siblings anymore." Chase looked like he was about to cry, but Bree shrugged, "At best, we're maybe colleagues, Mr Davenport." Of course, Bree didn't feel like that, or maybe she did. Whatever, she needed to punish Chase and the way to do that was to make him think she stopped caring. He needed to learn his lesson, so she had to go out with her friends.

"Bree, wait!" Chase ran after her, but Bree shook him off.

"Get the Hell off me!" She looked at him, "I'll see you on the next mission." And she sped up the elevator before Chase could catch her.