So, I saw this acoustic version on MTV.com, since Justin was Artist of the Week. This is
correct, so you can play along to the performance. It's a really easy song to play. 
3 chords. You can check out the performance here. 
http://www.mtv.com/videos/misc/454257/never-let-you-go-live.jhtml#id=1625705

Made by Karina. Check me out at http://myspace.com/sporty_bballchick.

Standard Tuning
G# - 466544
Cm - 335543
A# - 688766

Verse 1

G#They (xx1114@1)say that hate has been sent
Cm (x3101x@1)             A#So (x1333x@1)let loose the talk of love
G#Before (xx1114@1)they outlaw the kiss
Cm (x3101x@1)          A#Baby, (x1333x@1)give me one last hug

G#There's (xx1114@1)a moment I've been chasing and I
Cm (x3101x@1)                 A#Finally (x1333x@1)caught it out on this floor
G#Baby, (xx1114@1)there's no hesitation
Cm (x3101x@1)                          A#No (x1333x@1)reservation 'bout a taking a chance and more, no, because

Chorus

G#It's (xx1114@1)like an angel came by
Cm (x3101x@1)           A#And (x1333x@1)took me to heaven
G#'Cause (xx1114@1)when I stare in your eyes
Cm (x3101x@1)           A#It (x1333x@1)couldn't be better

G#Let (xx1114@1)the music blast
CmWe (x3101x@1)goin' do our dance
A#Bring (x1333x@1)the doubters on, they don't matter at all
G#'Cause (xx1114@1)this life's too long
CmAnd (x3101x@1)this love's too strong
A#Baby, (x1333x@1)you know fo sho, that I'll never let you go

Verse 2

G#I (xx1114@1)got my favorite girl
Cm (x3101x@1)                 A#Not (x1333x@1)feelin' no pain, no fear, oh no
G#Don't (xx1114@1)have a care in the world
Cm (x3101x@1)             A#Why (x1333x@1)would I when you are here?

G#There's (xx1114@1)a moment I've been chasing and I
Cm (x3101x@1)                 A#Finally (x1333x@1)caught it out on this floor
G#Baby, (xx1114@1)there's no hesitation
Cm (x3101x@1)                          A#No (x1333x@1)reservation 'bout a taking a chance and more, no, because

Chorus

G#It's (xx1114@1)like an angel came by
Cm (x3101x@1)           A#And (x1333x@1)took me to heaven
G#'Cause (xx1114@1)when I stare in your eyes
Cm (x3101x@1)           A#It (x1333x@1)couldn't be better

G#Let (xx1114@1)the music blast
CmWe (x3101x@1)goin' do our dance
A#Bring (x1333x@1)the doubters on, they don't matter at all
G#'Cause (xx1114@1)this life's too long
CmAnd (x3101x@1)this love's too strong
A#Baby, (x1333x@1)you know fo sho, that I'll never let you go

G#It's (xx1114@1)like an angel came by
Cm (x3101x@1)           A#And (x1333x@1)took me to heaven
G#'Cause (xx1114@1)when I stare in your eyes
Cm (x3101x@1)           A#It (x1333x@1)couldn't be better

G#So (xx1114@1)take my hand, let's just dance
Cm (x3101x@1)           A#Watch (x1333x@1)my feet, follow me
G#Don't (xx1114@1)be scared, girl I'm here
Cm (x3101x@1)                A#If (x1333x@1)you didn't know, this is love, oh

G#Let (xx1114@1)the music blast
CmWe (x3101x@1)goin' do our dance
A#Bring (x1333x@1)the doubters on, they don't matter at all
G#'Cause (xx1114@1)this life's too long
CmAnd (x3101x@1)this love's too strong
A#Baby, (x1333x@1)you know fo sho, that I'll never let you go


So yeah, that's the song. If you have any questions or comments, feel free to email me 
kmalykhina@yahoo.com.