Why am I the one who's sorry?

I am really sorry
I feel really bad
I shouldn't have said that
I'm sorry that you're mad

I promise I'll try harder
I'm truly very sorry
I'll watch my tongue next time
Send my apologies in a lorry

All these apologies
All that I've done wrong
Yet I've only just noticed
I can't see your part in this song

You're not perfect either
You've messed up too
Yet I'm the one who's sorry
Well what can I do but, oh yeah, sorry, yeah sorry for offending you