Boyce Avenue - Just Cant Get Enough Chords & Tabs

My first tab, and I cant work out the bass note if you can, get in touch with me, I'm 
very open to your suggestions!:D
[ Tab from: https://www.guitartabs.cc/tabs/b/boyce_avenue/just_cant_get_enough_tab.html ]
e|--------------------------------------------------------|
B|--------------------------------------------------------|
G|--------------------------------------------------------|
D|---3----1-----3--1-----3-----1-----6--1-----------------|
A|-7---7-----7--------7-----7-----7-----------------------|
E|--------------------------------------------------------|