Crowley had known you weren't in a good mood all day, it was honestly pretty obvious. What he DIDNT know however, was what exactly was the matter with you, and you were dead set on not telling him, that much was obvious.

Currently the two of you were lounging comfortingly on the sofa, while he was brainstorming the best course of action to take. "You know angel, I've been around a while, you could tell me you think you're turning into a cloud and I wouldn't even bat an eye!"

of course you knew what was wrong, but you weren't about tell him that you were on your period, you were far to manly to admit that to him. So you settled for keeping that to yourself. He did not find that very amusing

"FINE then, be like that angel. if you need anything, tell me straight away or I swear to Satan-"