Hey this is the first song I've posted on here, but I thought I would show you
guys how I play it, since I think the other tabs needed some altering. XD 
Please rate accordingly.
Shoot me a PM if you think this needs revised.
Relient K is the best!! 
Thanks!
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**Pretty sure its downstrokes... (the whole thing)

Standard tuning
Capo 3rd
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Verse One:

GIt's (320003@1)been a year
Filled with problems
EBut (022100@1)now you're here
Almost as if to solve them
C (x32010@1)                   D (xx0232@1)                GAnd (320003@1)I can't live in a world without you now
GAll (320003@1)my life
I've been searching for you
EHow (022100@1)did I survive
In this world before you
C (x32010@1)                              D (xx0232@1)               G---
Cause I don't wanna live another day without you now

CHORUS:
GThis (320003@1)is the best thing
                             EThe (022100@1)best thing that could be happening
                      CAnd (x32010@1)I think you would agree

The best thing is that it's
D (xx0232@1)                  GHappening (320003@1)to you and me

(Same as verse one)
All I wanna have
Is all that you can give me
And I'll give right back
Everything I kept in me
Cause nothing ever felt as right
As this does right now

I'll go back to before we met
Try and erase the past
Try harder to forget 'cause
Nothing will ever be as good as here and now

(Pre-Chorus)
G (320003@1)                           ECause (022100@1)when I looked into your eyes
And you dared to stare right back
               C (x32010@1)                    D (xx0232@1)              G (320003@1)   
You should've said "Nice to meet you, I'm your other half"

CHORUS (same):
And this is the best thing
The best thing that could be happening
And I think you would agree
The best thing is that it's happening
This is the best thing (the best thing)
The best thing that could be happening (the best thing)
And I think you would agree (whoooaaa whooaa)
The best thing is that it's
Happening to you and me

AmAlways (x02210@1)knew
         CI'd (x32010@1)find someone
I never dreamt
             GIt'd (320003@1)be like this

You've surpassed
              EAll (022100@1)that I've hoped for (and ever wished)
Am (x02210@1)And I'm tryin'
CSo (x32010@1)hard
    Am (x02210@1)    C (x32010@1)       Am (x02210@1)With all my heart and mind
AmTo (x02210@1)make your life
   C (x32010@1)                DAs (xx0232@1)good as you've made mine

(same as chorus)
This is the best thing (the best thing)
The best thing that could be happening (the best thing)
And I think you would agree (whooaaa)
The best thing is that it's happening to you and me

The best thing is that it's happening to you and me
The best thing is that it's happening to you and me

(The best thing) The best thing that could be happening
(The best thing) I think you would agree
The best thing is that it's happening to you and me 

(end on G)