Guys, Why he laughs at me?

my driving teacher touches my hand, caressed me and said "your skin so soft, what do you use?"
I didn't like it...
Told my boyfriend that my teacher made weird comment
He laughed and said:"let him enjoy... he is old anhways, what he gonna do?"

I laughed but honestly i thought he would be annoyed or angry

Guys, Why he laughs at me?
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