A Start or An End?

I wake up on a rainy day,
last moments seem gloomy.
The weather denies joy
on my last full day.
How could it be?

The sky opens slowly,
light in its might.
Dark clouds shy away,
and the arc of colors shows.
Oh, it's a rainbow.

In this moment,
your presence I've found.
Our story unfolds
like a rainbow,
so profound.

When I decided to embrace us,
our hearts surely entwined.
Yet you left me alone,
leaving me and our love behind.

What does the rainbow say
for our love's decree?
Should I stop chasing pavement,
or under a different sun,
chasing fully with glee?