满不在乎

He answered in such an offhand manner that I wondered if he’d misheard me.

他如此满不在乎教我怀疑他是不是听错了我话。

I am hearkening...... I doing feelingly for sure, but I doing put a bold face on sth.Pretending.

我在楼上听着…… 明明是很感，却要装作心理满不在乎。