Look at this:
Nina walks by and he doesn't even notice.
Then Crowley gets close and his eyes immediately snap to him.
His attention was so focused on the love scene playing out between Gabriel & Beelzebub that he didn't notice a whole other person walking in front of his face, but Crowley goes to leave and he's immediately like, "Babe, you good? Where you going?"
He loves him so much and I can't wait for S3.
Credit to @ohsoldier for the original gif.













