Physics ka paper

Once a girl askd a boy:
Why we have units to measure Weight,
Height,
Force,
Speed,
Distance etc.
But nothng 2 measure
Love
Trust
Frndship,
Why?
Boy thought 4 a while,
took her in arms,
looked in her deep eyes and said:
“Dekh janu bkwas na kr mai date py aya hon Physics ka paper dainy nahi” lol :d