A Scientific Valentine

I write today of human love
Not as some gift from god above,
But scientific views thereof
From many different fields.
Each science may have different tools,
And so the scientific schools,
Although they may agree on rules,
Have very different yields.

The chemists say it’s chemistry;
Biologists, biology;
Astronomers say “Can’t you see?
It’s written in the stars!”
In physics there’s a certain view
Psychology can claim one too
(And one with naught at all to do
With Venus or with Mars)

I’ve read a scientist who writes
That mating pairs scale passion’s heights
To outmaneuver parasites—
That could, of course, be it.
I’ve also read, we may respond
To those to whom we’ve grown quite fond
Because a stable mating bond
Makes offspring much more fit.

They may (or may not) all connect,
As scientists may well expect.
If one of them is more correct
Then I am not aware
But I am yours, if you’ll be mine,
My scientific valentine,
Through random chance or will divine
I frankly do not care.