Back then you used to be my medicine, medicine, medicine
We used to be so innocent, innocent, innocent
Then you turned into a drug
That won't get me high enough (won't get me high enough)
Back then you used to be my

Feelin' sick to my stomach, and I think I know why
I can tell something's different since we lost the fire
Every word's catastrophic, every kiss seems strange
Don't you feel like something's changed? (all of a sudden)

You're into material, don't wanna be physical
And you pretend it's alright (all of a sudden)
I feel so invisible, my condition's critical
Wish you could pause and rewind

Back then you used to be my medicine, medicine, medicine
We used to be so innocent, innocent, innocent
Then you turned into a drug
That won't get me high enough (won't get me high enough)
Back then you used to be my medicine, medicine, medicine
We used to be so innocent, innocent, innocent
Then you turned into a drug
That won't get me high enough (won't get me high enough)
Back then you used to be my-

Feelin' sick to my stomach, it's like I don't know you
I can tell something'’s changin' that we can't undo
Every night's a disaster, every kiss feels cold
When did we lose our control? (all of a sudden)

You're into material, don't wanna be physical
And you pretend it's alright (all of a sudden)
I feel so invisible, my condition's critical
Wish you could pause and rewind

Back then you used to be my medicine, medicine, medicine
We used to be so innocent, innocent, innocent
Then you turned into a drug
That won't get me high enough (won't get me high enough)
Back then you used to be my medicine, medicine, medicine
We used to be so innocent, innocent, innocent
Then you turned into a drug
That won't get me high enough (won't get me high enough)
Back then you used to be my-

You've changed, I've stayed the same
I'll stay the same (back then you used to be my)
You've changed, I've stayed the same
I'll stay the same