Why did you leave?

"How about you sleep on the bed and I can just sit on the sofa for the night."Ann said, "It's so far from Ninghai to Xijiang. You drove all day and you must be exhausted."
"Not tired."Nereus Henry took a look at the double bed and thought that the bed was so wide that there would be no problem for two people to sleep on it, but he could not say it out loud.
There was only a single sofa in the room, and Nereus Henry couldn't bear to let Ann sit on it all night.
"I'll sleep on the sofa....