Jason Derulo - In My Head tab

The songs pretty much one riff, this is my first tab but would gladly figure out and 
some more :)

EADGBe
[ Tab from: http://www.guitaretab.com/j/jason-derulo/219201.html ]
e-----------------------------------------|
B-----------------------------------------|
G-5555-8888-3333-5555---------------------|
D-5555-8888-3333-5555---------------------|
A-3333-6666-1111-3333---------------------|
E-----------------------------------------|

Enjoy :)