How Could I ...?

How could I have said those things
I guess I was just mad
how could I have hurt you like that
I really do feel bad

I knew what I wrote would hurt you
but I did it anyway
I just want you to hear
a few things that I have to say

I shouldn't have said those things
none of them were true
and if I had to choose between you and any guy
it would always be you

I want you to be happy
and I love to see you smile
I got used to your boyfriend
I'm sorry it took a little while

I'm always going to be there for you
and I hope you'll be there for me
you were my reason to live
now my life has no meaning

I just wanted you to know
how I really feel
you are my best friend
and I hope I'm your best friend still