Heart.

Becomes faster.
Beating rushes, as the adrenaline pumps,
The heart beats faster to get the blood rushing to limbs.
Breathing becomes faster, shallower.
The sudden stop of everything, feeling of knowing too far too quick...
Then the constant longing for that feeling.
Knowing what its like when its gone, so i don't try.
Time to forget these insecure feelings,
Forget all the things from the past,
To take my own advise and look foward.
Without sounding completely twatish.
If I'm going forward, I'm happy its with you.