Eventually, Derek ended the staring contest there.
"What the hell Stiles?" He was shocked. Why did Stiles have a knife? Why did he make a barrier? Why was there so many things he was hiding from the pack? From him.
"I can explain," Stiles said as he expertly put the knife back away in his jacket. He started pacing trying to figure out how and what exactly to tell him.
"Stop pacing a break the barrier Stiles," Derek said exasperatedly. Stiles just waved his hand and the barrier broke. He Stopped pacing and faced Derek.
"I don't know how to start. But I guess I start with the problems first." Stiles sighed. He'd tell Derek first and if this turned out bad he'd figure out how to take care of everything. He hoped.
"Do you know who the 3rd Winchester is? Do you know them personally?" Derek asked. I wish I just knew the person.
"Yeah. I know who it is." Stiles says.
"Really who?" Derek said curiously.
"It's me. Hence the barrier and knife." Stiles said, watching Derek's face. Well, Derek didn't expect that.
"What do you mean it's you?" Stiles really didn't want to reveal everything. Yet.
"I mean technically I'm a Winchester." Technically because he was Stiles Stilinski.
"You have brothers?" Derek was confused, and a bit betrayed that Stiles didn't think to tell him.
"No, no Derek there my cousin's." Then softer he said. "From my mom's side." Derek gave him a solemn look. He knew what the feeling of missing someone you loved. He knew better than most. "I didn't know they were hunters until Bobby explained it to me." Derek made a weird face. Stiles didn't understand why.
"Bobby the FBI guy?" Shit. That's why.
"Um… " Stiles made a slip of the tongue. He was more relaxed around Derek. At Least that what he blames it on. Derek decided to do something.
"Stiles. What did you do during the summer?" Stiles gave him a wide-eyed look.
"I told yo-" Derek gave him an eyebrow that said talk and growled interrupting him. Stiles sighed. "I trained with FBI agents and I did a few jobs with them," Stiles said annoyed. Derek tilted his head. It was kinda cute to Stiles.
"You're lying. Every time you say FBI you lie." Crap. "Stiles. Why do you keep lying?" Derek was getting frustrated. Stiles said to trust him and he was trying but it was hard when he kept lying to him. The only truthful thing he said tonight was that he had cousins.
"Fine, just fine, I'll tell you." Stiles was just gonna say it. "I wasn't training with the FBI over the summer. I was training with a hunter. Whose name is Bobby." Stiles huffed. He was kinda glad to get that off his chest. Until he looked at Derek's face. A face that portrayed betrayal.
"You trained with a hunter. Why?" Derek was getting mad.
"Because I didn't want to be the weak defenseless human anymore Derek! I wanted to help the pack. And the only way I knew how was to ask someone who knew about the supernatural." Stiles half yelled. His anger also rising.