To Booth's surprise, Zack was sat against his door when he got home.

"Zack?" He asked quietly, stopping in front of him. Zack had his head against the door and his eyes closed. At the sound of Booth's voice, his eyes shot open.

"Booth," He said quickly, standing up. "Sorry," He said immediately, as Booth looked wordlessly at him. "I know I shouldn't be here, but,"

"It's ok," Booth said softly. "Are you ok?" Zack nodded, moving to the side as Booth jangled his keys – and indication that he wanted to get into his apartment.

"I'm fine," Zack said softly. "I just, I wanted to come and see you." Booth nodded as he opened the door. Zack followed Booth in to his apartment, shutting the door slowly behind him.

"You want a drink," Booth asked, walking into the kitchen.

"No thanks," Zack replied, looking at the sofa, unsure of whether or not to sit. Booth came back into living room. Seeing Zack look around, he indicated to the sofa.

"Sit down," He smiled. "I don't charge." Zack smiled shortly before sitting down. Booth sat next to him, a mask of worry immediately covering his face.

"Are you sure you're ok?"

"Yeah. I'm ok. I just wanted to come over. I don't know why, but recently I feel more comfortable around you than anyone else." Booth smiled softly, his eyes seemed to sparkle lightly.

"It's good to know," He said quietly. Zack smiled, his head dropping slightly. "So, do you just wanna hang out here for a while?" Booth asked after Zack fell silent. Looking up, Zack smiled again.

"If you don't mind."

"Of course not," Booth smirked, picking up the remote at turning on the TV. "Got any preferences?" Zack shrugged sheepishly.

"I don't really watch TV."

"Well then," Booth's smirked seemed to widen at this statement. "Let's see what's on."

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Booth looked over and smiled softly. Zack had fallen asleep on his sofa. They were watching a night of 'Supernatural' and Booth couldn't help but be amused. Zack was constantly pointing out the impossibility of it all, but still couldn't take his eyes away from the screen. As the credits rolled on the last episode, Booth switched off the TV and stood up. He took another moment to regard Zack, remembering the way the young PhD had reacted to the show's two male leads. He'd tried to cover it up with scientific babble, but Booth knew immediately. He hadn't said anything, not wanting to embarrass Zack, but Booth found himself wondering what he could do to discover the whole truth about the young man asleep in his apartment. Closing his eyes and shaking his head, Booth turned and headed towards his bedroom. He didn't need to be thinking like that. Things were complicated enough with Brennan, he didn't need to be giving Angela more reasons to smirk knowingly at him in the lab.

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Zack smiled to himself as he rose from Booth's sofa. He didn't understand why, but his spirits were always lifted when he knew Booth was near. Stretching slightly, Zack looked around. His eyes fell on the clock, which read 4:30am. It was too early, but Zack wasn't tired. Smiling lightly, he decided how to pass the time. Booth didn't need to be up for at least another hour. That was plenty of time for Zack to make them some breakfast.

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Stilling his breath slightly, Zack opened the door to Booth's bedroom. It was quarter to 6, and Zack was carrying a tray filled with bacon, eggs, pancakes and coffee. Walking as quietly as he could, Zack felt his pulse start to quicken as he caught sight of Booth. The FBI agent was sleeping soundly, topless with the sheets up to his waist. He stirred slightly as Zack set the tray down on his bedside table. Taking a deep breath, Zack reached out a hand, touching Booth's arm timidly. Moving his hand faintly, Zack leaned in to Booth's ear.

"Booth," He whispered, part of him hoping Booth wouldn't wake up. "Booth, wake up." At his words, Booth stirred quietly, opening his eyes to look at Zack.

"Zack?" Booth whispered sleepily. "What time is it?" Zack smiled softly at the dopy expression Booth wore.

"It's almost six," He replied. "I made you some breakfast." Booth sat up and looked over to the tray.

"Thanks," Booth mumbled. He could feel Zack's hand still on his arm, but something inside stopped him from changing it.

"What are you doing up this early?"

"I just... woke up," Zack shrugged. Booth nodded, sitting up further. Zack took a sharp step back, his eyes darting to the floor. Booth looked at him confusedly for a second before realising the problem. As he was moving, the sheet had slipped. Nothing was showing, but it was obvious to all involved that Booth was naked in his bed.

"Well, I'd better get up," Booth said quickly, smiling softly at Zack. "Thanks for the breakfast." Zack smiled lightly before leaving the room quickly. Booth smiled warmly as he looked at the breakfast Zack had made him. Today was going to be a hard day to get through.