クールに燃えた

[Kenshiromusou]

Yo, friends.
Could you help me again?
I came across this phrase: 「必死で戦う彼女の姿を見て、彼はクールに燃えた。」
What クールに燃える means?
Thank you in advance.

 

[kanadaaa]

When someone is cool, they don't talk much.
So the sentence means "Seeing her fighting hard, he was ignited, although he remained silent".

 

[Kenshiromusou]

どうもありがとうございました。