TabScout.

Notice

The fingerings are my own and may or may not be the same as what Brendan and Jake use! I've looked everywhere for a video of them playing this song, but with no luck. If I do find one, I'll update the tab as necessary...

For the main riff, use a combination of pick and fingers to get the sound ... pick the bass note and use your fingers to sound the "chord".
Well, it wasn't until I was almost finished with the transcription that I realized Ryan Staski uses a FIVE-string bass ... fortunately, this isn't a problem on the bass score, but for the purists, I'll pay more attention next time!

Lyrics

(Intro/Verse 1)
You got my number, you can make the call
Until then I won't bother you at all
I'd let you walk all over me again
But a smile is something I could not pretend
And every time I felt like this was wrong
You made me feel like I should tag along
And once or twice it would be nice to see you
Even if I don't believe you

(Pre-Chorus)
Even if I don't believe the life you lead
There will always be a time where you would need
Someone, something
Someone, not me

(Chorus)
There'll be no doubt, intentions clear
We'll hide our thoughts behind the mirror
There'll be no wrong, there'll be no right
But this could be a lonely night
With wintered steps our footprints fall
But I can't feel a thing at all

(Verse 2)
I know it's wrong to make assumptions
But without them then I'm left with nothing
I've always focused on the fractions
To slowly understand what happened
I know you've got a lot of questions
But the answers always aren't the best thing
And once or twice it would be nice to see you
Even if it's bad for me to

(Chorus)