Chase laughed when Nessie squeaked, and his arm slid around her back when she got all up close and personal. Though a second later he felt all kinds of awkward, because of Preston there and he felt bad that things were weird, because they felt weird. He didn't know if Preston had a case of the feels for Nessie or not, but it seemed like a douchy move for him to sit on the floor and snuggle her with him in the room. Especially since he and Nessie weren't actually together, and he'd just realized that he had zero right to hold any sort of animosity toward Preston.
So, he took his arm back, and hopped to his feet, looking at everyone. "I'm gonna go get snacks! And drinks! And stuff, what's everyone want?" he asked, probably a bit too loudly.