Ahhh, yeah. Riku was REALLY warm to have snuggling up to him, when Sora was pretty naturally warm in the first place. It couldn't be all that comfortable for Riku, either.
But, Riku probably needed the extra love to get better right now. Sora put his arm around his boyfriend, and gently combed his fingers through his hair. He'd eat his lunch later when he wasn't busy cuddling Riku.