Deceit loved to make sarcastic comments and allude to his skills and hobbies, but he wasn't actually comfortable showing them to people. The reason he even brought them up was because he knew no one would believe him. He used his position as the deceitful, lying snake as a security blanket almost. 

There's a lot of things he enjoyed doing, but there's one hobby was incredibly embarrassed to admit was his favorite: dancing. He just loved twirling and moving to music. Deceit just found something therapeutic about it. 

He loved all types of dance, but his personal favorites were swing and waltz. The only problem was that those two were much better and more fun when you had a partner, and despite his want to dance with somebody, he was not about to go ask one of the other Sides; actually, he made a point to avoid the other Sides when he wanted to go practice. 

The Mind Palace could contain any room you could possibly imagine. You want a gym with endless exercise equipment and free snacks? It's got it. You want a room full of tables and tables of gourmet food? Just say the word. This meant that Deceit could have the perfect ballroom for dance practice any time he wanted. He just had to get there when it wasn't being used by one of the other Sides, and he had to get there without being spotted if he wanted his secret to remain intact. He was always exceptionally careful, but one afternoon, a certain creative Side saw him heading that way. 

Roman knew very little about the deceitful Side. The only things that he was certain of was that nothing he said was likely to be 100% true. This came into play quite often whenever Deceit had something to say to him in particular. 

He wasn't stupid; he knew that the lying Side had a habit of manipulating him into agreeing with him, into getting him on his side when facing the four of them. He showered him with compliments and treated him with "respect" in order to get the princely Side to trust him. Roman let him get away with it too, not because he fell for it, but because typically he was on Deceit's side. 

That was something he could never admit to the others either. 

When he saw the deceitful Side heading toward the ballroom, his curiosity was peaked. He couldn't help it, he was curious by nature being Creativity. He followed him stealthily to find out what he might be doing in the empty ballroom.

Soft music was playing from inside when he reached the doors. Roman paused and pressed his ear to the wood, listening closely to see if he could make out what was happening just from the audio. It was some kind of instrumental music, beautiful and slow. It made his heart want to sing along with it and a small smile crossed his face for a moment before he refocused. 

He cracked the door open slightly, peering inside to see Deceit standing along in the center of the ballroom, his arms raised as though he was waltzing with another person. Deceit likes to dance? he thought as amusement flared up in his chest. That's actually pretty cute.

The other Side was unaware of his presence as he slipped into the room. His eyes were closed as he moved around the ballroom to the music, making Roman smile at how into it he was. He had flawless form and a fantastic sense of what he and his imaginary partner would be doing if he was real. 

Getting an idea, the princely Side sneaked forward. He got close enough to take one of Deceit's hands and place the other on his waist, making the snake-like Side jump in shock. His eyes shot open and landed on Roman, looking him up and down as he blinked several times. 

"Uh- what are you- I mean- I totally wasn't just pretending to dance with someone, what are you talking about?" he hurried out, trying to pull his hands away. 

The creative Side kept a firm hold of them as he smirked and leaned toward him. "Don't worry Deceit," he reassured him. "I think it's adorable, and I won't tell anyone your little secret if you don't want me to."

"Really? I find it hard to believe you can keep a secret, no offense Roman, but you're pretty much an open book," Deceit replied, rolling his eyes slightly. 

"Am I now?" 

He pulled him closer and allowed his smirk to grow as the snake-like Side's eyes grew wide. He dropped him into a dip, following him down so that their faces stayed close together. "I've got secrets of my own, Deceit. If you play your cards right, I might let you in on them some day."

The other Side blinked at him rapidly as his human cheek grew pink. Roman pulled him back up and chuckled to himself as he began to walk toward the door. "You know, if you ever need a dance partner, just ask."