Effective Opening -
Once upon a time...

Repetition -
I loved you again
and again
and again
and again
and I couldn't seem to stop.

Triples -
You were three things to me,
my heart,
my soul,
my life.

Hyperbole -
The way my eyes shone when I saw you was exaggerated.

Protagonist -
Me.

Antagonist -
Her, no wait, you.

Conflict -
You love for me and her.

Plot twist -
You loved her more.

Euphemism -
You fell in love with someone else -
you just fell out of love with me.

Dramatic Irony -
You told me
you thought I was the one.
It was ironic how
you broke up with me
ten days later.

Pathetic Fallacy -
The day it was over,
rain started pouring out of my eyes.

Rhetorical Question -
Did you ever love me?
Or was I just to fill the abyss until you met her?

Anagram -
'i love you.'
'O Evil You.'

Faulty Parallelism -
My love for you was eternal,
not like yours.

Effective Ending -
She's broken [she is me]
s(he's) br(ok)en

Epilogue -
I'm okay.