User blog comment:LordLuminous/Fairy Tail 491: Mother and Child Review/@comment-96.83.80.245-20160628114716/@comment-7418318-20160628172226

I also doubt this happened. Neither of the two sides of his personality we've seen so far seems likely to fake Erza's death.

The good side wouldn't even think of such betrayal and the bad would have killed Erza instead of faking her death.