Derek sipped his coffee as he went back to the bio-chem lab. His sleep had been troubled all night. When he entered the room he could see Greenberg struggling tremendously and took a long sip of his coffee before starting across the room. He stopped when he noticed Isaac Lahey was at his station alone.

"Hey Isaac, I happened to notice your lab partner isn't here. Is Scott alright? He seemed fine yesterday." Derek asked quietly.

"He was fine yesterday, and the reason he isn't here is your fault," Isaac said, his jaw tightening. He put down the things he was doing and grabbed his bag from under the table.

"I'm sorry, Professor, but I have to go," Isaac called across the room.

"You and McCall will have to take an incomplete," Harris answered. Isaac nodded and stormed out of the room.

A confused Derek followed the curly haired brunette into the hall.

"Isaac! What's wrong?" Derek demanded. The other man stopped, his shoulders squaring and turned, his eyes blazing with anger.

"You want to know what's wrong?! My boyfriend's best friend is so sick that he can't leave a bed. It's not just because of crippling despair over the fact that you broke up with him for completely stupid reasons but also due to the fact that he went missing in a storm for hours! If he catches pneumonia because of it, I'm laying full blame on you!" Isaac yelled at him, his voice echoing off the walls. Isaac was shaking with rage and looked like he wanted punch Derek but instead he turned and stormed off, muttering curses under his breath.

Derek stood there, shocked. Isaac's words had shaken him to the core. He went back to the lab, grabbed his bag and headed off campus. He needed to talk to Laura.

"Hey Derek, what's up?" Laura asked when he entered her office at the back of her restaurant.

"Can I talk to you?" Derek said closing the door.

"Sure baby bro," She answered, moving to sit down on the couch that was along one of the walls.

Derek sat down next to her and explained everything. He even thought about showing her the email, but decided to respect Stiles' privacy.

"Derek, he obviously wasn't using you for sex. He wouldn't be this upset if he did. Kate, however, was. You really should talk to him, explain why you freaked out the way you did," Laura said when he finished.

"I just feel like I've caused too much damage for him to want to see me again," Derek replied.

"If you don't talk to him, then yes you have," Laura said finally. Derek nodded and got up.

"Thank you," he said before leaving. He smiled to himself when he heard his older sister mutter "idiot".