Soren would've stopped if Cass had asked; his friend's comfort level came first, and this was just a bit of fun. But Cass pulling him closer - at first it didn't seem so bad. With his eyes closed, he let himself slip into a bit of fantasy, seeing whose faces came to mind. He'd run through a few before he felt hands in his hair, felt a slight rock of Cass' hips. Inhaling sharply, Soren couldn't help but repeat the motion. Other people's hands (that weren't his family's, obviously) felt amazing in his hair. He hadn't known. Filing that information away, he felt his hands move around to Cass' back and knead slightly.