This is all that I've heard of the song and i'm pretty positive that it's right.
INTRO:
e|--------------------------------------------------------------------|
B|--------------------------------------------------------------------|
G|-4444444444-------------------------6666666666----------------------|
D|-4444444444-4444444444-66666-444444-6666666666----------------------|
A|-2222222222-4444444444-66666-444444-4444444444----------------------|
E|------------2222222222-44444-222222---------------------------------|
[ Tab from: http://www.guitaretab.com/j/jonas-brothers/107365.html ]
VERSE:
e|---------------------------------------|
B|---------------------------------------|
G|--------666----444---------------------| x2(don't play last 2 chords 2nd
D|-666----666----444----444-555-666------| time).
A|-666----444----222----444-555-666------|
E|-444------------------222-333-444------|
CHORUS:
e|-----------------------------------------------------------------|
B|-----------------------------------------------------------------|
G|-4444444444-------------------------6666666666-------------------| x2
D|-4444444444-4444444444-66666-444444-6666666666-------------------|
A|-2222222222-4444444444-66666-444444-4444444444-------------------|
E|------------2222222222-44444-222222------------------------------|
if you can, listen for strum patterns. it's pretty simple, i learned it in 5 minutes.