Some obsessions are not good for you
Some obsessions are just what you need
I am obsessed with you
It'd be convenient for you to be obsessed with me

Some posessions are not good for you
Some posessions are just what you need
I am possessed by you
It'd be convenient for you to be posessed by me

But before I was after your heart
Before I was after your heart
I didn't know where I should start
Before I was after your heart

Some expressions just don't express you
Some impressions just don't impress me
I must confess
I believe you might be the best for me