Thank You to LittlePippy33 for this idea, I have done a Waiter AU before but this one is pretty different, Hope you like it! Also, I have been ADDICTED to Pewd's Tuber sim... help me.

Jack fixed the collar of his white shirt, that he just knew wouldn't be white for long in this job. He steadied his nerves, he was happy he got this waiter job but was terrified because damn, waa he clumsy. He just hoped everything would go smoothly.
"Order up!" The chef shouted, making the green headed man jump, another reason he was surprised to get this job, usually the green hair was off putting - He had no idea why, though. Jack picked up the tray of drinks steading his hand and went off to serve costumers. Everything was going smoothly, until one particular order, to one particular costumer. The man had a black and red plaid shirt, loosely fitting; The colours matched his fiery red hair and as soon as his eyes met Jacks, he knew he was screwed. Everything turned to jelly and the plate he was holding slid, the things atop it going over the man.
Jack wanted to run away, as be frantically apologized.
"Im so sorry sir, oh my god. First day on the job and I screw it up." He expected the man to rage, to complain and get Jack fired - Instead he let out a laugh that seemed to fix everything.
Jack was still flustered.
"I have cleaning things through the back and maybe a spare shirt, if you'd like sir. Im so, so sorry."
"That'd be nice, Don't worry about it."
As Jack walked around the back he racked through some boxes, Mark perhaps not so casually staring at his ass, Whoops.
"Ah here you go sir."
"Thank you, Jack." The green haired man panicked for a moment, wondering how the red haired man knew his name but then remembered his badge and played it off.
"Youre welcome, Um-" Jack paused did he really want to be on a first name basis with this stunning red headed man whos shirt was way too see through right now and was incredibly distracting.
"Mark. Eyes are up here." Jack got incredibly flustered again as his face turned red, curse this man.
Of course, he had to change right now, right here in front of an increasingly flustered and clumsy waiter.
After he put the shirt on, Jack nodded, looking away from Mark, as he left the room.

At the end of the night, a note was passed to Jack, with neatly written numbers on it.
Call me, if you're not too flustered ;). - Mark.

Turns out, Jack was. Every time he went to type Mark's number he'd either get the numbers all wrong or get to the last one and panic, What if it was just some kind of joke? What if it wasn't even Marks number? He didn't call Mark, he was too scared to. So he carried on working, extra carefully as to not have a repeat of what happened with Mark, seeing him shirtless was pretty nice, though. The green haired man was doing fine until the American came in again and ordered. Of course it was jack who had to serve him. 

"What Can I get ya?" He spoke, as he rubbed the back of his neck with the black pen he was given. 

"Perhaps a call?" The red headed man winked - Making Jack feel flustered yet again. 

"I was too nervous to-" Jack shook his head stopping. This made the American smile, what a cutie. 

"Sit down, Jack."

"Im working, I cant.." Seeing the American look up at him, he sat down sighing. They talked for probably Jacks whole shift, and it was nice. Mark was a game developer something that, when he told Jack it made his eyes light up. Unfortunately, Mark got him fired due to their talking and as they left the restaurant, Jack just burst out laughing. "Thanks for getting me fired."

"Ill help you find another job, if you'll let me?" Jack nodded, his heart felt like it was on fire which would probably be the same color as Marks hair.

-

Jacks little cousin sat starring up at him and Mark. "Jacky, How did you and Mark meet?" Before Jack got to say anything, Mark spoke up. "Well. It all started with Jack, the clumsy green haired waiter who, even now, still gets flustered!"