Once they got back to the hotel, Mia waited for them in the lobby while they checked out of their rooms. Booth was the first one down to the lobby.

"Agent Booth…I take it no one told any of you that I was going to be accompanying you all on your trip."

"Nah, but…it's cool. So…are you from around here?"

"Um, no…I live in New York City, actually. And Dr. Brennan was right. I'm an anthropology student, my last semester starts next month, actually." Mia told him

"Ah…so…that makes you about…22?" Booth asked her.

"Yes." She answered, then looked to see Brennan approaching them with Sweets following her.

"NO, Sweets…I do NOT need anyone to help me with my bags!" Brennan moved closer to them, rolling her eyes toward Booth at Sweets' actions.

Mia felt bad for the psychiatrist when she saw the confused look on his face. For a moment, his gaze shot toward Booth as if Booth was somehow the source of the confusion.

Sweets caught Mia looking at him, and pulled his arm up to wipe his forehead. Was it getting hotter in here? He looked back at her, but she was busy examining her fingernails. He looked back at Brennan to see her pulling on Booth's arm. With a sigh, he picked up his bag and walked toward the hotel counter.

Booth followed his partner over to a corner of the hotel lobby.

"Subtle, much, Bones?" He teased.

"What?"

He shook his head, "Nothing" he sighed. "What's up?"

"Well…it's Mia…"

Booth looked over to their new companion. "What about her Bones?"

"Well…I…don't really like using this word to describe anyone, but…"

Booth raised his eyebrows. It wasn't like Bones to be deliberately mean. Sure, she said mean things to people, in a 'truth hurts' kind of way, but…she wasn't malicious."What is it, Bones?"

"I don't know Booth…I just…I think she might be the cutest thing I've ever seen."

Booth smiled. "Yeah…I know."

Brennan was serious. "No, Booth. I mean it. I…I know I'm awkward, but…she…"

Booth laughed. "Yeah, Bones…yeah…so…now what?"

"What do you mean, Booth?"

"I mean, so now, what?"

"Well, nothing….you…you told me not to do anything. To leave it all up to you, Booth."

"And, you're just going to do that?" For the first time ever?

"Yeah, I mean…you're the heart guy." She replied as she moved to walk toward the counter.

He paused. "Yeah…yeah, I am."

By the time they grabbed some lunch and got loaded up into the SUV, it was already 2:30, and they knew they had a long drive ahead of them. It was quiet for the first hour or so. Mia was wondering if maybe she was to blame. She felt like the first 'fourth' wheel in history. Four was supposed to be a set, right? But somehow, the three of them fit together, and she felt awkward. Not that she'd done much that wasn't awkward, but…still…

"So Mia…know any good road trip games?" Booth was asking her from the driver's seat.

'Hmmm….well, there's the alphabet game, but…" she caught Booth's eye in the rearview mirror, and he laughed.

"Yeah, I don't know if these two would like that one."

Brennan looked between the two of them, "What's so hard about it?" She wanted to know.

"It's not difficult at all, Dr. Brennan. It's very simple. I think I even get bored with it, so someone with your intellect would probably not find it enjoyable" Mia answered her.

Brennan seemed to accept this. "So, since Dr. Sweets is also very intellectual, then you think he would also not enjoy this?"

Mia turned to look at the man sitting beside her. "I…I'm not sure what Sweets would enjoy." she admitted.

Booth snickered, and Mia gasped, realizing too late her words could have another context. She spared another glance toward Sweets and saw he was looking back at her, a bit of a blush on his cheeks, but a kind smile on his face.

Sweets looked over at Mia and smiled. He felt kind of bad for her; she was always putting her foot in her mouth. Speaking of her mouth…it was….he turned and looked out the window once he realized he'd been staring at her lips, watching as her teeth sunk into the bottom one nervously.

Taking a deep breath, he opened his mouth to say something, but Booth beat him to it.

"Okay, okay" Booth began. "Maybe we should just talk about something."

"Like what, Booth?" His partner wanted to know.

"Well…I don't know…uh…okay, here we go. What's the best concert you've ever been to?"

"Huh?" Brennan asked him.

"Come on, Bones. Concerts. Outside, lots of people, music…good times…."

"I know what a concert is Booth." She raised her eyebrows.

"Well, then tell us, Bones. We'll each tell our favorite concert. Okay with you Sweets?"

"Uh, yeah, sure."

"Sounds interesting. I think you can tell a lot about a person by their favorite concert." Mia added.

"Well, what if a person has never been to a concert?" Brennan asked.

Mia paused, and Booth bailed her out.

"Well, Bones…that says a lot about that kind of person." He grinned. 'You first, Bones."

"Why should I go first, Booth? It was your idea. You should go first." She rebutted.

Booth sighed. "Fine Bones." He shook his head. "Okay…best concert ever….1997. Pearl Jam and Dave Matthews Band open for the Rolling Stones…awesome.. Philly…Veteran's Stadium…Yeah!" Booth pumped his fist in the air once.

Brennan rolled her eyes, "What is it with you and Philadelphia, Booth?"

He looked over to her. "I love it there. Sweets, you know what I mean, right? Philly? The city of 'brotherly love'…you went to college there. It's great, right?"

Sweets agreed. "Sure, I guess."

"You guess?" Booth was incredulous. "Hello! America? Liberty Bell…Ben Franklin…Philly is amazing. I love it."

Brennan smirked, "Then why don't you marry there."

Booth about swerved off the street. "What?"

"Well, if you love it so much…" she replied, proud of herself.

"Bones…it's…'why don't you marry it. IT, Bones!"

"Oh…"

He looked over to her. 'Best concert ever, Bones."

She tilted up her nose. "Well, I've never been to a Rolling Stones concert, but I once heard the African Children's Choir in Africa. And that was amazing. Booth…the children, and their voices…it was very inspiring." She finished quietly, knowing her answer might not be that cool.

"That's nice, Bones. Really nice." Booth smiled at her. "I bet it was amazing."

She smiled back at him, until he tilted his head toward the backseat. "What about you guys?"

Sweets thought about it for a moment. "Well…I once saw U2 at Madison Square Garden. May 21,…"

"2005" Mia jumped in. "Dude. I was at that concert."

Sweets turned to her. "No way!"

"Way!" She laughed. "I love U2."

Sweets swallowed. "I love U2, too."

They both froze for a moment, almost as if they'd heard the real thing.

Mia bit her lip again and blushed, looking out the window.

Sweets did the same, and neither one of them noticed the smug looks on the faces of the front seat passengers.