Crave | A sterek fanfiction

"Are you afraid of me?" Derek asks Stiles returns his gaze at Derek and says "No". Derek raises his eyebrow at that "Then why is your heartbeat so fast" he asks.
~~~~~
"Wh-What are..you dd-doing" he stutters Derek seems pleased at the reaction he recives from Stiles. "What do you think!" Derek wispers brushing his lips against Stiles ear, making Stiles gasp.