Nox doubted Belle was the reason for them both being sick. Yes, she'd been under the weather in recent days, but nothing like this, and it had been so sudden, the timing exactly the same for both of them. Something more was at work here. Someone did this to them, maybe by magic, a toxin, or even an engineered virus. He was well versed in the world of supernatural hunters. There were a number of groups who knew of the existence of supernaturals and wanted to exterminate them. Perhaps they were responsible for this. Or maybe it was just another seemingly innocent spell gone terribly wrong. It was hard saying this early on, and Nox didn't know if he'd be able to investigate the situation given his weakened state.
"I don't care about the fever cycle. You're cold, I'm hot. With any luck, our temperatures will balance out." He refused to let her go once she was in his arms, and he made sure they were snuggled under a great many blankets.
Perhaps it was a bad time to mention it, but given their current states, Nox thought maybe he should say something. "I made sure everything in my will was updated after I was my rightful age again. It's all taken care of should anything happen to me. You and Katie both."