Sam/Ruby
Ruby didn't quite see at first, it was chaos all around. Everyone around, the hellbound returned and Ruby broke away from the ritual as soon as Crowley said she could move. That it was done. And she looked around, knowing he'd probably be furious at her. Knowing that he'd told her not to come after him and having done it anyway. She couldn't have ever just left him there though, not Sam. She didn't think she would be capable of it.
Finally she spotted him, and god it had to be awful, cruel. Trapped with Lucifer for that long who knew what horrors he'd have suffered. But he was back. It didn't matter whatever else happened. He was back. She ran across to him nearly sliding in the mud as she pulled him into her arms.
Him. She probably should check if it actually was him. If she was hugging Lucifer right now this could go badly wrong. She tensed slightly and looked up. "Sam...prove its you." she said simply, looking around for Castiel who would likely know if this was in fact his brother or not. Looking for some way to tell before smiting ensued.
That look in his eyes though. That wasn't the arrogance of Lucifer.