User blog comment:FairyRaven/Fairy Tail Chapter 423: Do It All for Love, Review and Commentary/@comment-1359322-20150309103939/@comment-4933386-20150309144338

Gray probably neglected Juvia because Gray was too busy and obsessed with finding Zeref so he can kill him dunno why.

Maybe he wants to find a way to revive his father? could that be possible?