what are words

I love this song. part of what makes it so amazing is the story behind it.
Chris Medina, a contestant on American Idol, was engaged to his girlfriend. But two months before their wedding his girl was in a very bad car crash and received severe brain damage and was partially paralyzed. He decided to stay with her and take care of her. This song is about how he is keeping his promise to her. (here is a link to read the full story)
You can watch the song here (because I can't figure out how to get the video in here).
These are the lyrics:

"What are Words" Chris Medina
Anywhere you are, I am near
Anywhere you go, I'll be there
Anytime you whisper my name, you'll see
How every single promise I keep
Cuz what kind of guy would I be
If I was to leave when you need me most

What are words
If you really don't mean them
When you say them
What are words
If they're only for good times
Then they don't
When it's love
Yeah, you say them out loud
Those words, They never go away
They live on, even when we're gone

And I know an angel was sent just for me
And I know I'm meant to be where I am
And I'm gonna be
Standing right beside her tonight

And I'm gonna be by your side
I would never leave when she needs me most

What are words
If you really don't mean them
When you say them
What are words
If they're only for good times
Then they don't
When it's love
Yeah, you say them out loud
Those words, They never go away
They live on, even when we're gone

Anywhere you are, I am near
Anywhere you go, I'll be there
And I'm gonna be here forever more
Every single promise I keep
Cuz what kind of guy would I be
If I was to leave when you need me most

I'm forever keeping my angel close