Is This What's Called Falling In Love?

I lie awake unable to sleep
As my thoughts are like clouds dancing.

It seems like my every waking moment,
I’m thinking of you.

When I don’t see you
I ache for your presence
And the mere sight of you
Takes me to emotional depths
I’ve never felt before.

When we are together
Your beautiful smile jumps from your lips
And lands in my eyes.

Not a day goes by without my needing and wanting you.
With you I taste a thousand joys
And I always want my smile to say to you,
I love you no matter what,
Because you are my best friend.

My heart, my love, and my life.
Is this what’s called falling in love?