He plays it in a open tuning, but to keep the same sound with standard tuning I suggest playing the Em
like this: Em7 [02203x]
[VERSE]
D Em
I wanna go home, I wanna get out.
D Em
Come out from under my shadow, but I'm not allowed.
D Em
I wanna forgive, I wanna forget.
D
Say goodbye to my comfort...
[CHORUS]
Em G
I don't know why and I don't know when, I need you now like I needed you then
[VERSE]
D Em
I wanna be young, don't wanna grow old
D Em
I think to much of my future, break the mold.
D Em
I'm dreaming of sin but where to begin?
D
I'll be like this forever...
[CHORUS]
Em G
I don't know why and I don't know when, I need you now like I needed you then
Em G
I don't know why and I don't know when, I need you now like I needed you then
[INTERLUDE]
D Em D Em
[VERSE]
D Em
I wanna go out, don't wanna stay in.
D Em
I'll be like this forever to complete my sin.
D Em
I wanna be true, just like you
D
Don't wanna be a liar...
[CHORUS]
Em G
I don't know why and I don't know when, I need you now like I needed you then
Em G
I don't know why and I don't know when, I need you now like I needed you then
Em G
I don't know why and I don't know when, I need you now like I needed you then
[VERSE]
D Em
So keep your dream, keep your pain
D Em
Keep it under your conscience, stay in from the rain
D Em
I wanna be cool, just like you
Bm
I wanna be together...
[CHORUS]
Em G
I don't know why and I don't know when, I need you now like I needed you then
Em G
I don't know why and I don't know when, I need you now like I needed you then
Em G
I don't know why and I don't know when, I need you now like I needed you
D/F# Em D
Now like I needed you, now like I needed you then
Source: https://tabs.ultimate-guitar.com/tab/hudson_taylor/dont_know_why_chords_2100329