Title: Progress
Author: Mary Flowers
Fandom: CSI: Vegas
Character(s) or Pairing: Greg Sanders/ David Hodges
Prompt: Parallel
Rating: PG-13
Disclaimer: Jerry's.
Summary: Their relationship progresses.
A/N: This is what happens when I actually listen during Physics lessons. Crossposted to philosophy_20.

i. If the light passes through the lens, it becomes parallel to the principal axis.

No one could judge their relationship as straight. Well, first of all, for one, the people in the relationship weren't so there's no way the relationship was. Their relationship wasn't wobbly, because that would mean it wasn't stable. Oh, they were stable all right. Stable right up to the point of twirling rings around their fingers every single time someone gets the other worried. Their relationship…wiggled? Something like that. It was like waves, the ups being make out sessions and the downs being the fights over miniscule things like ketchup (yes, this happened). But Greg supposed he wouldn't want it any other way, whether they wiggled, bolted, shimmy-ed, heck, even Saturday-Night-danced because, really, it didn't matter. He smiled as he filled the 8-Letter box with STRAIGHT with a blunt 2B pencil.

ii. If the light hits the optical centre, the direction doesn't change.

David silently cursed as he swerved a sharp right and came to a stop, managing to avoid the truck by bare inches as his breath came short, mouth agape at the current situation. His hands trembled as he lifted them off the steering wheel and he turned to the next seat, eyeing a wide-eyed Greg who just happened to be heaving uneasily. It didn't help that neither one of them was talking either. David didn't have time to comprehend what was going on, didn't have time to grasp that the truck driver actually didn't stop driving, didn't even notice that 2 black and whites had just sped by. He let a hand reach out tentatively, letting it rest lightly on Greg's shoulder before giving it a gentle squeeze. That got the younger man's attention and they managed to secure a tight hug without being restrained by their seatbelts.

They were okay.

iii. Parallel rays of light are referred to as beams.

"Hey Jacq, what do you like?"

"I'm not in the mood for 20 Questions, Greg."

"It's only one! Just this one, c'mon, answer it!"

"Pay rises? Cigarettes? Just like Heaven?"

"Cute. Seriously."

"Seriously!"

"Nooo, food wise Jacq!"

"Well say so! Um, anything Italian I suppose."

"Lasagna?"

"Make it beef."

"Noted."

"Do I want to ask why?"

"Well, you can hardly have a successful wedding if everyone hates your food, can you?"

Grissom has yet to forgive Jacqui for dropping the evidence.

iv. The incident ray is equal to the reflected ray.

The only thing missing was a white picket fence. But that was only because Greg had ordered it late and the delivery man had mistook the address for somewhere all the way across town, but nevertheless, it was scheduled to arrive in about two hours. Other than that, things were sailing smoothly. They had finished unpacking (without too much teasing about articles of clothing), the fridge was now filled with food (David was still in shock that Greg hadn't eaten it all), the taps and shower heads were up and running (discovered by a very surprised Greg while fixing the shower curtain) and of course, the coffee maker contained coffee (Greg's stash). They had bought the house barely two months ago after Greg had spent some time squealing and persuading David to at least "give it a look-see" before outright demanding he didn't like it (when he actually did).

It was ideal for them.

v. Luminous objects are things that emit light on their own.

"David?"

"What?"

"I love you."

"Six thousand and ninety-third time you've told me that, Greg,"

"Just felt like saying it,"

"Why didn't you tell me you were afraid of flying? I could've booked train tickets or whatever."

"I'm not afraid, Dave."

"Which is precisely the reason why you've said you loved me about six thousand and ninety four times these past two hours."

"That's just because I mean it. And you changed the number; it's six thousand and ninety three."

"You're keeping count?"

"No, you are, you said so just now."

"Really, we're not going to crash, G."

"David! Don't say that! It's taboo!"

"So is the word ‘watermelon' apparently."

"Seriously Dave, you can't say that while in the air."

"I, unlike you, have faith in the pilot."

"Pilots."

"How do you know there's more than one?"

"They're like shoes, always in pairs. It's rather strange."

"Says the man who skipped grades in high school."

"Yeah, well..."

"Either way, I love you too."

And with that he reached over and held Greg's hand till the flight was over.

Fin.