User blog comment:FairyRaven/Fairy Tail Chapter 423: Do It All for Love, Review and Commentary/@comment-4933386-20150309143753/@comment-9595671-20150315013502

For why Lyon didn't see Juvia, he probably felt he didn't know how to help or that he couldn't.

That and he probably thinks Gray's the reason and he can only do so much in that area.