Mathematician Love Letter

My Dear Love,
Yesterday, I was passing by your rectangular house in
trigonometric lane.
There I saw you with your cute circular face,
conical nose and spherical eyes, standing in your
triangular garden.
Before seeing you my heart was a null set,
but when a vector of magnitude (likeness)
from your eyes at a deviation of theta radians
made a tangent to my heart,it differentiated.
My love for you is a quadratic equation with real
roots,
which only you can solve by making
good binary relation with me.
The cosine of my love for you extends to infinity.
I promise that I should not resolve you into partial
functions but if I do so, you can integrate me.