well people i dont think like u i think well its just my opinion well utau thought that she loved him as a boyfriend but actually she love him as a brother then when she begin going out with kukai she knowed how love is then she didnt really show anything about ikuto
Yeah, she loved him... xD
I remember one time when they where kids, Tadase said something like:
"It's my turn with big brother! He want's to play with me!"
And Utau said: "Noo! I'll make him fall in love with me!"
Then Ikuto said: "Do you even know what that means?"