Derek & Nick
As a general rule, Nick wanted to dislike Derek. For absolutely no reason other than Kate had tried to date a version of him long before Nick had even tried to be interested in her. When her dating other people before he'd given in had been exactly what Nick had told her to do.
It was a terrible reason, and he was in a good mood, surrounded by so many people.
With Rocco...somewhere, Nick wasn't worried, knew the toddler was perfectly safe surrounded by the packs, he jumped on the opportunity to chat with Derek, slinging his arm around the man's shoulders and smiling over at him. "Hey."