Love and Sex

once a professor asked his students to use 'love' and 'sex' in
a sentence.
.
.
Girls wrote:
When mutual understanding between a boy and a girl
increases so much that they cant live without each other,
implies they are in "love" and when this love reaches extreme
such that both feel bodily same, they engage themselves in a
body to body pleasureful combat that we call "sex" !
.
.
.
Boys wrote:
I love sex :)