He didn't have the heightened senses even as an emissary that Scott had as a werewolf. He didn't hear him coming. He was too focused -- wired, really -- on his research, cross-referencing, making notes in a document on his Macbook. So when the door flew open and Scott began talking, Stiles jumped about a foot, eyes widening at the unexpected disturbance. He quickly shut his computer before turning to face his best friend, heart beating a little too fast in his chest.
"Are you trying to give me an actual heart attack? Because werewolves might not be able to have them, but I'm pretty sure that I definitely can, tender age of seventeen or not." Or was he eighteen now? Technically with time travel involved...yeah he had no idea. Maybe he should think about asking someone who actually lived in this world.
The seriousness on Scott's face finally caught his attention and he held his breath, tensing a little. Yeah, he was pretty sure he wasn't going to like this conversation. Not if his suspicions about the subject at hand were accurate and...given everything, he had a feeling they probably were. He exhaled slowly. "What's up?"