There's pretty much just one riff for the song, as follows.
Timings and such aren't perfect but its just a quick basic tab 'cause of the lack of 
bass tabs.

Main riff=

|------||-----------------------||-------------------|------------------|
|------||o---------------------o||-------------------|------------------|
|------||o---------------------o||x3-----------------|------------------|
|--7-7-||--7-7-5-5---10-10-7-7--||--1012121212121212-|-1012121212141414-|

The "because, because, because..." part is 12th fret on E but just let it ring.
Later on in the song near the outro you have to repeat the latter part a few times over 
just end on fret 7 to finish it off.

As I said, its simple, but it's only a quick tab done by ear so feel free to post 
and corrections.

Thanks,
*.