These bass tabs might not be 100% correct but the only chords in the whole song are like 
Esus and A so you can play with it

G-------------------------------------------------|
D-------------------------------------------------|
A------777-----777-----777------------------------|
E---000----000-----000----------------------------| Just keep repeating this for verse 
play with the octaves because its all in E

Chorus
G-------------------------|
D-------7777-------7777---|  Just repeat this for chorus
A--0000-------0000--------|
E-------------------------|

ILY U RACHEL!!!  ~Chelsea