Such a good bass line, had to be tabbed!
It's simple once you get the hang of it!
I'm pretty sure this is 100%
But corrections are more than welcome (:

Intro x2
G -------3-----3-------3-----------|
D ------5-5---5-5--00-5-5--3-3-1---|
A -15\33-------------------------1-|
E ----------11---------------------|

Verse x4
G --5---10-8--7---10-8--7---10-8--7---8-7-|
D ----------------------------------------|
A -3--/8--6--5/--8--6--5/--8--6--5/--6-5--|
E ----------------------------------------|

G --5---10-8--7----12-8--7---10-8--7---8-7-|  This variation is what you
D -----------------------------------------|  play on the third time (:
A -3--/8--6--5/--10--6--5/--8--6--5/--6-5--|
E -----------------------------------------|

Chorus x4
G ----3-----3-------3-----------|
D ---5-5---5-5--00-5-5--3-3-1---|
A -33-------------------------1-|
E -------11---------------------|

G ----35----3-------3-----------|  This is a variation of the chorus, again
D ---5-----5-5--00-5-5--3-3-1---|  played on the third time (:
A -33-------------------------1-|
E -------11---------------------|

Post Chorus Part 1
G -------------------------------------|
D -------------------------------------|
A -------------------------------------|
E -88888888-33333333-66666666-11111111-|

Post Chorus Part 2
G ------------------------------------------|
D ------------------------------------------|
A ------10-8-10------555--------------------|
E -88888--------33333----66666888--11111/13-|

*Verse x6 (With variation second and fourth time)

*Chorus x4 (With variation third time)

Post Chorus Part 1
There is no bass

Post Chorus Part 2
G ------------------------|
D ------------------3-3-3-|
A ------------------------|
E -8----3----6----1--1-1--|

Outro X4
G ------------------------------------------------------|
D ---10------------5------------8------------3----------|
A ------10-8-6-8-----10-8-6-8-----10-8-6-8-----10-8-6-8-|
E -88--8---------33-3---------66-6---------11-1---------|

End on ;
G --5\|
D ----|
A -3--|
E ----|

Enjoy (: