"Uhuh," Gokudera kinda shrugged. It depended if Riku thought it was an issue at all, he supposed. Some people just are slow to realize stuff.
"Oh." Gokudera hadn't really thought about where Tsuna would sleep. Well, there was the floor. But it was kinda crowded. "You can share my bed," Gokudera offered. "Then you won't be really tired tomorrow." Because NO ONE got a good night's sleep on the couch.
When Riku realized that he wasn't getting his pillow back from Sora, he just moved closer (after turning out the lights) so that they could share it, and put his arm low around Sora's hips just because that was how it was comfortable to lay if they were going to share the pillow. Yeah. "Goodnight, Sora," Riku said softly.