**Chapter 1: Slap Happy**

Nick was washing the dishes in his house when Charlie walked over, a mischievous glint in his eye. "Hey, how are you doing?" Charlie asked, his voice low and smooth. Nick turned to face him, a sponge held precariously in his hand. "I'm doing alright, I guess," he replied, a hint of a smile playing on his lips. Charlie, however, seemed to be in a particularly playful mood. He reached out and playfully slapped Nick's butt, making him jump in surprise. "Good looking," Charlie said with a chuckle, his eyes sparkling with amusement. Nick's face went warm with a blush as he quickly turned back to the sink, trying to compose himself. "Now hold on just a second there," he said, his voice laced with a mock threat. "I'm gonna get you back for that one." Charlie laughed and took a step back, his eyes never leaving Nick's face. "Oh, I'm shaking in my boots," he teased. Nick quickly rinsed off his hands and dried them, before taking off after Charlie, who was already making a run for the stairs. "Turn around and let me see that cute little butt of yours," Nick called out, his voice playful. "It deserves a good whack for whacking mine." Charlie's laughter echoed through the house as he bounded up the stairs, Nick hot on his heels. They tore through the house, their shouts and laughter filling the air. As they reached the top of the stairs, Charlie suddenly ducked into his bedroom, slamming the door shut behind him. Nick skidded to a stop in front of the door, his hand reaching out to grab the handle. "You're not getting away that easily," Nick said, his voice muffled by the door. The door creaked open a moment later, and Charlie's face appeared, a grin still plastered on his face. "Oh, I'm not trying to get away," he said, his voice low and flirtatious. "I'm just trying to make it more interesting." Nick raised an eyebrow, his heart beating just a little bit faster. He had a feeling that things were about to get a lot more interesting...