i've heard lyrics

I heard this
I heard that
What do I believe?
It's hard to give
It's hard to get
And once you've lost it
it's always gone
I know I shouldn't accept
one person's word as truth
without at least giving you
the benefit of the doubt
I get so mixed up
by the things you say
and the way you act
Too many times this has happened before
I always thought the wrong thing
I never gave you a second chance
Now it's happening all over again