"I'm sorry"

I’m sorry cuz I fell for you, I thought this was more than just a “fling.”
I’m sorry cuz I meant nothing to you, despite them songs you used to sing.
I’m sorry cuz you cheated and thought you could come back.
I’m sorry for all the things, that you said I lacked.
I’m sorry we didn’t spend much time together, but you know it worked out for the best.
And I’m sorry cuz our “relationship,” failed this dumbass test.
I’m sorry cuz you’re the one, who has to live with this deep regret.
I’m sorry for the things I said or didn’t say, now about me, please forget.
I’m sorry cuz I used up your time; and for you to forget about me, I’ll do whatever it takes.
But I’m not sorry for this piece of shit relationship, cuz I learn from my mistakes.