This Tab is 100 percent correct if you listen to the song this is the exact bass part. And its 
really easy to play. I put it in order so you can play it right through.

Intro/Chorus:
D------------------------------------------------------------------------------
G---------------------------------------------------------------3-3-3-3-3-3-3-3
A-----------------------5-5-5-5-5-5-5-5----------------------------------------  (x2)
E--3-3-3-3-3-3-3-3----------------------0-0-0-0-0-0-0-0------------------------
 

Verse:
D---------------------------------------------------------------------
G---------------------------------------------------------------------              -A------------------------------------------------------3-3-3-3-3-3-3-3   (x4)
E--3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3--0-0-0-0-0-0-0-0----------------


Pre Chorus—Slow Part:
G ----------------------------
D-----------------------------
A--2----3------5--5—7---------  (x1)
E-----------------------------


Intro/Chorus:
D------------------------------------------------------------------------------
G--------------------------------------------------------3-3-3-3-3-3-3-3-------
A-----------------------5-5-5-5-5-5-5-5----------------------------------------  (x2)
E--3-3-3-3-3-3-3-3----------------------0-0-0-0-0-0-0-0------------------------
 

Verse:
D----------------------------------------------------------------------
G----------------------------------------------------------------------
A------------------------------------------------------3-3-3-3-3-3-3-3-   
E--3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3--0-0-0-0-0-0-0-0---------------- (x4)


Pre Chorus—Slow Part:
G ---------------------------
D----------------------------
A--2----3------5--5—7--------  (x1)
E----------------------------



Intro/Chorus:
D-------------------------------------------------------------------------
G----------------------------------------------------------3-3-3-3-3-3-3-3
A-----------------------5-5-5-5-5-5-5-5-----------------------------------  (x2)
E--3-3-3-3-3-3-3-3----------------------0-0-0-0-0-0-0-0-------------------


Bridge:
G-----------------------------------------------------------------------------
D-----------------------------------------------------------------------------
A---------5--5-------------5--5---3--3--3--3--3--3--3--3--3--3--3--3--3--3—3--
E-3--3------------3--3--------------------------------------------------------  (x4)


Outro:
D-----------------------------------------------------------------------------
G--------------------------------------------------------------3-3-3-3-3-3-3-3
A-----------------------5-5-5-5-5-5-5-5---------------------------------------  
E--3-3-3-3-3-3-3-3----------------------0-0-0-0-0-0-0-0----------------------- 
(Fade Out)