The lyrics from the song below titled "Flow" by Spirit of the Wood ft. Amir Rivera capture the essence of flow in a relationship:

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(That's that flow that we know so well)
(That's that flow that we)

 

I woke up when I heard a sound
The fallen leaves they talk to me
I watch them as they hit the ground
The wind the trees in harmony
Singing in a perfect round
That's how you and I could be
Cuz you never ever let me down

 

You're here I melt
Now we ebb with the flow so well
My words your spell
That's that glow that we know so well
 

There's a thousand ways to visualize
Your midnight moon your morning light
Your horizon on a perfect sky
The ground below the birds in flight
The way you make me come alive
You're my glowing fire in the cold of night
I'm gonna love you till the day we die
 

You're here I melt
Now we ebb with the flow so well
My words your spell
That's that glow that we know so well
 

Now the sun don't shine as long
Seasons change the mighty fall
I never thought we'd drift apart
But the winter silence says it all
I'm surprised to see the dimming light
In the dark your perfect charm
But you and me will be alright
 

(That's that flow that we)
That's that glow that we know so well
(Flow that we flow that we)
That's that flow that we know so well
(That's that flow that we)
That's that glow that we know so well
(Flow that we flow that we)
That's that flow that we