Yeah. That's the exact look Derek wore from time to time. It surprised him to see Peter react the same way or that he could look so much like Derek when he wore such a broody look on his face.

Which, by the way, Peter still kind of creeped Stiles out in a major way. Why did he suddenly feel calm? Well, as calm as he could possibly be considering the majorly fucked situation he currently found himself in? He'll just chop it up to pack stuff.

"If we get through the next few months without them taking out Derek." He said, marking his spot in the book he had been reading up until the moment Peter walked in. What to expect when you're expecting just didn't cover half of the freaky hormonal shit going on inside of him.

"Derek's a decent alpha. This is pretty much trial-and-error for him you know?" Mostly errors though. Lots of huge errors. "Dude, you have no idea how hard it is to push back omega instinct." An omega's purpose was essentially to increase the numbers of the pack, especially if said pack lacked a certain number of readily available females.