So agia only cares for ken but not deeply in love with ken?
Ok so what I understand, think of it as, Agia's whole life has been defined by the prophecy to the point where he can't really tell what is "his own" desires are versus what is "desires dictated by the prophecy" in his mind. He's obsessively in love with Ken but can't distinguish his own feelings so his mind compartmentalises it as the draw between the subjects of the prophecy. Ken on the other hand asserts that he is sure of his feelings for Agia.
hope that clears it up (tho i think ive made more confusion..)
Now wadahell so he wants to leave him cus he cant forgive himself? GOODBYE!