Hermione and Ron
The downside of being an Auror, or at least the biggest one, was having to go to things like this. Ron had discovered years ago that he didn't care for anything that might be termed a 'gala', and that distaste wasn't abating with age.
Not having Hermione there with him just made it even worse, and Ron was feeling rather sorry for himself. He was managing to avoid the temptation of the bar, for which he was rather proud of himself: alcohol didn't tend to work in his favour if he was trying to appear remotely professional.
The truth was that he missed Hermione. He always had, whenever they had a row bad enough to cause them to stop talking, and naturally it had only been increasing since school. The worst part was that their fights were hardly ever about anything serious and, by this point, Ron really only knew that he was meant to be angry at Hermione for something.
It was difficult even for Ron to stay upset with someone for no reason, and when he spotted her dancing and talking with an older wizard and looking even more lovely than usual, he had to finally admit that maybe his pride wasn't worth it.
He stood to the side of the floor, hands in his pockets, and tried to keep track of Hermione so he could find her after.