Immortal Lovers and the Dust of Tribulation

One is my former lover from a past life, alluring to the very bone; the other is my new love in this life, as beautiful as a celestial maiden... If I become an immortal, I will slay demons and vanquish evil. But how can I sever these tangled romantic entanglements and leave the mortal world behind? The road to immortality is long and hard. Who will walk it with you?