User blog comment:Miskos3/Chapter 478: Stealth, Review/@comment-24784846-20160319155222/@comment-7418318-20160319155838

So Zeref was (or maybe even still is) in love with Mavis.

Considering the moment when she had her epiphany it seems like she plans to strip for him or something... I hope it's just poor timing for her thoughts to come, though Tristan would probabl be delighted by the idea.