Which word is more harsh, 'You shouldn't say it" or "I don't wanna hear it"?

Rating: 8/10 (13 July 2019)

"Here's looking at you, kid."
In Japanese subtitle, it was translated "Cheer, for your eyes." It was so romantic! So I thought it was a kind of sweet musical movies that a cheesy man flirts with a woman. But he didn't sing at all.
It showed their old wounds which they got because of the war. Then they got some abilities to live smartly.
Why do the movies have the good ending make me such comfortable? It was hard to live in a low-keyed way. Inspite of hardness, he had a firm belief and guilty. That's why it had a charm that it sucked me in.
"As time goes by."