Everybody loves coffee

Scott sees that Stiles has a new boyfriend and that he's extremely happy... But what happens when Scott tells Derek about the marks he's seeing across his body, and that Stiles' smile seems more fake by the day?

"Derek I need to talk to you about something..." Scott sighs.

"What about pup?" Derek smiles.

"I don't really know, but I saw Stiles changing today and he had some serious bruises up his chest..."