User blog comment:Mangetsu20/Magic Science! (FTC - 451)/@comment-30807545-20150912235238/@comment-21119641-20150913003303

This may be a...dumb theory but. If you think of it, Zeref was overwhelmed with the 2nd love he had in his life. What if Natsu gives him back the meaning of living, a reason to live. Ankhseram's (?) curse is contradictory, upon this sudden second release of love, he may finally die.