Sam had gone home to New Orleans to visit his family. Clint was out on the town, doing reconnaissance on the tracksuit mafia. Why, Steve didn't know, though Clint had been heard to say on several occasions that they deserved reconnaissance for the tracksuits alone.
Natasha and Pepper were nowhere to be seen, either. Shopping, yoga, or plotting to take over the universe, Steve had no idea.
All he knew was that he needed to get his hands on Bucky, take him back to their suite, and give him a good cuddle.
He was relatively sure cuddle wasn't a euphemism.