I don't know

The truth is
I love you.
Put it in stone and call it fact.
No formula could prove me right,
No formula could prove me wrong.
I don’t know a lot,
Who I am, what I feel,
Why I am sad, why I am happy.
But
The sparkle in my eye at the sound of your name,
The exhale from my mouth at the sound of your voice,
I’ve lost words to try.
I love you.
That I know.