After watching their live videos countless times, I can safely say that this is the 
and right way to play it.

"This May Never Start..."
No Bass

"Lost your sense of fear...."
G------------------------------------------------|
D------------------------------------------------|
A-4~-----------4/6~----------6/9~---------9\4~---|
E------------------------------------------------|


Chorus
"So get back, back, back to where we lasted...."
G------------------------------------------------|
D------------------------------------------------|x2
A-44444444---------------------------------------|
E----------22222223-66666666-44444444------------|


Bridge
G--------------|
D--------------|     x2
A-4------------|
E---44-2-22-22-|


2nd verse
"This may never start, I'll tear us apart...."
G------------------------------------------------|
D------------------------------------------------|
A-4~-----------4/6~----------6/9~---------9\4~---|
E------------------------------------------------|

"Losing Half A year..."
G-------------------------------------------------------------|
D-------------------------------------------------------------|
A-444444444444-6666666666666-999999999999-444444444444-44-4-4-|
E-------------------------------------------------------------|


Chorus
"So get back, back, back to where we lasted...."
G------------------------------------------------|
D------------------------------------------------|x2
A-44444444---------------------------------------|
E----------22222223-66666666-44444444------------|


Guitar Solo
G---------------------------------------------------|
D---------------------------------------------------|
A-444444-----------------444444---------------------|
E-------4442-2222222222--------4442-2222222222------|

G--------------------------------------------|
D--------------------------------------------|
A--------------------------------------------|
E-6666664442-2222222222--6666666666664442----|

G------------------------|
D------------------------|
A------------------------|
E-2-22-2--2-22-2--2-22-2-|


Drum solo  No Bass
"This May Never Start, Tearing Out My Heart"

"Lost Your Sense Of Fear"
G--------------------------------------------|
D--------------------------------------------|
A-444444444444-6666666666666-999999999999/4--|
E--------------------------------------------|


Chorus
"So get back, back, back to where we lasted...."
G------------------------------------------------|
D------------------------------------------------|x2
A-44444444---------------------------------------|
E----------22222223-66666666-44444444------------|


"This may never start, We Could Fall Apart,I'd be your memory."
G-----------------------------------------------------|
D-----------------------------------------------------|x2
A-44444444--------------------------------------------|
E---------44422222223-666666666-444444444-------------|


Bridge
G--------------|
D--------------|x4
A-4------------|
E---44-2-22-22-|


End On
G-------------|
D-------------|
A-4---12------|
E---4---------|

I hope that it helps some bassist out there play this song.
Thanks.

PS: Pls rate and comment on what you think of this tab.