I'm not sure if this is exactly what you're looking for, but i have heard that it is sung/played at many weddings. However, i am not sure where to get the TAB/notes for the music, as the band does not publish them.

The song is called "when the love is right" and is by Tourniquet.
Here's the lyrics.

The journey through our life can bring
A place and time for everything
A day of hope, a year of fears
A thousand smiles, a million tears

Our paths were meant to cross
And I couldn't forget you
No matter what the cost
We both had to see this through

Take my hand, take my heart
We will never be apart
Never be apart
Because I love you

Follow me and I'll lead you
Lead me and I'll follow you
Anywhere, anytime
When the love is right
The path is bright

From the Father of lights you came
And I know I'll never be the same again
A beautiful gift has been given to me
Your smiling face is all I see

The look that's in your eyes
And your smile that sets me free
Has made me realize
All that you see in me

Take my hand, take my heart
We will never be apart
Never be apart
Because I love you

Follow me and I'll lead you
Lead me and I'll follow you
Anywhere, anytime
When the love is right
The path is bright

Together now and forever
You are the one
You are my everything
To me you bring
The love that I have waited for

The look that's in your eyes
And your smile that sets me free
Has made me realize
All that you see in me
Our paths were meant to cross
And I couldn't forget you
The soul in you is the soul in me
The way that it was meant to be

You can hear a 30 second snippet on their website.
http://www.tourniquet.net/discography/?id=6

I don't actually have the song myself, but the snip sounds lovely.
Also, it is very likely that if you need TAB, there are usually many on the net. Just have a bit of a browse.