Imagine your OTP going ice skating. Person A is terrible at it and has to cling to Person B for support. They hold hands for each other's warmth because both of them forgot to bring gloves and afterwards they buy hot cocoa from a street vendor and huddle together as they walk home in the snow.
"Sherlock, how-?!" John shouted as he fell back onto the ice. Ice skating had never been a strength of his, but Sherlock seemed extremely good at it, seeing as he was doing jumps and making figure eights in the ice. He didn't understand how Sherlock had the ability to do anything that wasn't brainwork, but then again, he was a man of mystery. Sherlock sighed lightly, skating over to John's side and held out a hand to help him up.
"Honestly John, you act like I never did anything as a child." Sherlock said as he pulled John up and held him straight until he got his balance. It wasn't three seconds after Sherlock let go that John lost it again and fell back onto the rink. Sherlock chuckled, helping him up again. John groaned.
"Sherlock, this isn't even fun." John said grimly. Sherlock smirked, holding John's hands as he led him around the rink. John shivered lightly, but slowly got the hang of it. It wasn't as hard as it looked, but he wasn't sure he could do it on his own.
"Is it fun now?" Sherlock asked, leading him through a figure eight. John smiled at him, nodding. He was having fun now that he felt like he was gliding alongside Sherlock. It was even more fun when John's skate got caught up in a chipped spot and he fell, pulling Sherlock down with him. The two lay on the ice, laughing at each other as well as themselves. Slowly Sherlock got up, pulling John up with him.
"Hot cocoa sound good to you?" John asked as they skated off towards the exit of the rink. Sherlock nodded with a smile. They returned John's skates, seeing as Sherlock had brought his own, and bought two large cups of hot cocoa.
"So, how was your day off, Dr. Watson?" Sherlock asked as they stepped out of the building and into the cold Switzerland air. John grabbed his hand, seeing as neither of them had thought to bring gloves, and rubbed the back of Sherlock's already freezing hand. John smiled up at Sherlock.
"The best day off in a long while, Mr. Holmes." John said, still smiling. They had been dating for four months, but it still felt like the first date every time. Sherlock smiled at him, leaning over to kiss his lips gently as a gust of wind and snow swirled around them. Both of them shivered, but smiled happily at each other.
"Back to the hotel?" Sherlock asked, intertwining his fingers with John's. John nodded, huddling closer to Sherlock. Together, they walked, huddled close with hands intertwined, sipping their cocoa as they headed for the hotel down the street.