He doesn't know.
This is spoken by Saphira to the reader after she dies
What he doesn't know
Is putting me in pain
For I love him, my rider
He doesn't know my lineage, my royalty
For it is spoken in prophecy
He still wants cold-heart-arya
But nay, should he love me
That stupid boy, why can't he see?
That I love him for all eternity
He and I go to war
Against the black king
That traitor, murderer, oath breaker
Slew me in battle but he and shruiken went with me
I told eragon, who was at my side
I finally told him, I love you,
Just before I died
He sits now at my grave, Arya at his side
And told me
He loved me
Finally after I died
He realized, what he was to me,
What he doesn't know now
Is that I watch him
With my father and mother
And I whisper back
I tried and you broke my heart,
Go to hell, shadeslayer.
For that is where you should reside
For he never really loved me
Until after I died.