This song is very simple to learn. I actually learned it playing around after learning Notice Me.
E|----------------------------------------------------------------------|B|----------------------------------------------------------------------|G|----------------------------------------------------------------------|D|----------------------------------------------------------------------|A|----------------------------------------------------------------------|E|--2-2-2-2-4-4-4-4-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-10-10-10-10-9-9-9-9-| (Estimate how many times you strum this) ^
E|----------------------------------------------------------------------|B|----------------------------------------------------------------------|G|----------------------------------------------------------------------|D|----------------------------------------------------------------------|A|----------------------------------------------------------------------|E|--2-2-2-2-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-|
[Repeat throughout song]