The first sign might be that sound
A mixture of a heartbeat and rushing air.
Or perhaps it's the overwhelming hue
And saturation of color that's hard to bear.

It could be the smell of sunshine and petrichor
That settles into the nose covertly.
Or perhaps it's the swirl of flavor on the tongue
A vertigo of tastes so savory-sweet.

It may be the tingles that shiver from head-to-toe
And send jitters straight  to the gut.
Or perhaps it's that feeling, terrifying and real
When you know that you're falling in love.