When in Doubt (Nightmare x Blue)

A New Job

"I hate you."
Blue sighed as he looked at the uniform he was supposed to wear. It was restricting. It was a tight suit and dress pants like someone would wear to a fancy party. He straightened his bow tie and sighed.
Ink had made him sign up for this as part of an undercover job, but he was sure it was just an excuse for both Ink and Dream to get his mind off of his true job.
Blue walked out of the changing room. Sally, the woman who had hired him, stood up and offered her arm. He took it and she led him to the back. "Alright, you take orders out at the front, take 'em back, then get the food and take it out. Simple as that. Go at your own pace, take breaks if you want."
Blue nodded and headed out.
The first hour was great. Blue could learn to like this job, despite the alcohol. People came here, monsters and humans, and even children! Blue usually went for the tables with children, to avoid drunken men who wouldn't leave. It brought up bad memories.
About an hour and a half later, Blue went out to get another order. He was aiming for a table with two small children, when he felt the chill of a stare run down his spine. He turned and came face to face with Nightmare.
The other skeleton was looking at him with mild interest. He motioned to the seat next to him. Blue quickly looked the other way. He regretted it as the feeling of being judged intensified. He quickly turned from the happy family and forced himself to walk towards Nightmare's table.
"Hello sir."
"Sit down, Blue."
"I'm worki-"
"Sit."
Blue paused, sighed, and sat down opposite Nightmare.
Nightmare leaned forward. "What are you doing here?"
"What does it look like?"
"Even in a mundane setting, you bring so much...happiness." He snorted.
"I can't stop doing my job."
"Of course you can't." He gave the faintest smile.
"Can you?"
"Yep. I'm doing it right now." His smile turned to a smirk. You can handle alcohol, right?"
"What do you want?"
"How strong is your tolerance?"