User blog comment:IamJakuhoRaikoben/Chapter 333: Man and Man, Dragon and Dragon, Man and Dragon, Review./@comment-5580383-20130605085554/@comment-7418318-20130606062240

You forget something. Jellal pretty much told Erza that if she wanted to kill him, she should just go ahead and do it. If Milliana really tried to kill him, he might very well allow her to do so.

Not that I can see Milli actually going through with striking down someone who doesn't resist, especially not after she saw him saving Erza's live.