It was Christmas Eve and somehow Dean had ended up at Garth's Christmas party along with Sam, Bobby and a few other hunters that Dean didn't know. He was leaned against a wall talking to Sam about how great the pie was when he saw Cas appear out of the corner of his eye.
"Cas?" He wondered aloud and he wandered off to go see what was up. "What the hell are you doing at Garth's Christmas party?" He asked with a bewildered look on his face.
"I found a case and you weren't at the hotel so I came here to tell you." Cas said.
Dean stayed silent for a moment then said, "Well stay for the party, man. It's actually not half bad and the pie is absolutely-"
He was cut off by Cas asking, "What is that?" Dean looked up and saw the green and red mistletoe above his head.
"Damn it, Garth." He mumbled. "It's uh… it's mistletoe. When two people stand under it…" He lowered his voice and continued, "they're supposed to kiss." Dean felt butterflies in his stomach- Seriously? Butterflies? He was a hunter! He was supposed to be tough! Why was he feeling butterflies?- "Well" he stared into the angel's blue eyes. "We better get this over with before anyone sees us." He told Cas before grabbing his tie and pulling him close.
Their lips came crashing together and when Dean realized how nice it felt, he didn't stop. Instead he began sucking on Cas's bottom lip. Cas made a grunting noise but instead of pulling away, he slightly parted his lips allowing Dean's tongue to slide into his mouth. He grasped the hunter's shoulders and held him tight tasting the whiskey and cherry pie in his breath. By this time people had started to stare but at that moment, neither Cas nor Dean had a care in the world.