It was a good thing Sora was sitting on him, keeping him in one place, because there was little else stopping Riku from rolling over and giving Sora his best, 'but don't you want this' look and informing him that he was SURE he could manage a good nap after being completely exhausted.
"Its not like it would kill me," Riku muttered anyway. Hey, it was better than what he could have said! But he sighed. "Alright, Sora. You win. But if we reach a whole month of celibacy, you're not allowed to blame me if I show up on a week day and jump you."