User blog comment:IamJakuhoRaikoben/Chapter 398: The Final Duels, Review./@comment-25111584-20140903065859/@comment-25111584-20140903141007

@CNBA3: Lucy had a ... complicated ... relationship with Aquarius. Gray and Silver, I don't have to say anything. On the other hand, there is no real relationship between Kagura and Erza and Minerva and Erza. Milliana and Jellal, on the other hand ... That's why I think it'll be one of those two, though I'm betting on Jellal. Milliana dying would be somehow ... No idea. >.>

But this is all based on the assumption that Erza will lose somebody exclusively dear to her.