Why not take a day off?

Felix woke up around six o'clock and saw a sleeping Krystal at the side of his bed. He sat up surprised and the rag fell from his head. He was confused. He wanted to get down without waking her but she immediately felt the little movement and opened her eyes. She looked up and saw Felix.

"Ah, you're awake! Are you well now? Where's the thermometer?" She searched for the thermometer and found it. She yawned, stuck it in his mouth without his consent and after a few seconds, took it out. She read it and sighed in relief. "37°. You're well again."

"What's... going on?" Felix asked, still lost.

"Oh! You fell ill." She said and yawned. She still felt sleepy. "I took care of you the whole night and now I'm exhausted." She stretched her arms widely.

It took a while for Felix to process what she just said and then he realised...

"I didn't do anything stupid, did I?" he asked, fearing the worst.