Blake and Cas
Yes, Crowley and Castiel had been something like friends during Crowley's stay in Madison Valley. They had been intimate from time to time as well. So Crowley's departure from the town had affected the angel more than he admitted. But he was glad to be there for Blake, for as long as Blake needed him.
"Of course I'm here with you," he said with a slight smile. "There's no one I'd rather be here with." Sure, he may have gone with Sam or Dean Winchester, but he was rather fond of Blake's company. That was putting it mildly.
He kissed Blake softly, and followed it by another kiss. "I would do anything for you."