You're....

You make my heart race, my heart skip a beat and my heart stop.

You make time race, time skip and time stop.
You are my favourite hello and my hardest chance I didn't take.
You make my breathing race, my breathing skip and my breathing stop.
You are my everything yet my nothing, all at the same time.

You are my saving grace but my toughest strive.
You are my warmest smile but my coldest embrace.
You are the wind beneath my wings, the wind in my hair and the cold chilling wind across my skin. 

You are my words I want to shout but my words I want to keep in.
You are my everything yet my nothing, all at the same time.

You're my greatest dream but my harshest reality.