Would you let your waifu eat your flesh if insured her survival on a deserted island with no other source of food?
It's typically dangerous to amputate anything without the proper equipment or medical know-how. On a deserted island, even a small amputation would result in sure death. Infection or blood-loss most likely. However, I can alter the situation with my own mind, creating the fact that my waifu is actually two twin sisters. Then I simply kill one, allow both my waifu and I to eat quite well for some time. The power of the waifu is that it is a product of imagination.
As long as he lets me
go "Blue skadoo, we can too!" and jump into his bodybefore he eats me.
Never underestimate the power of NTR. Luck just may have that you didn't search the island properly and that they are just waiting for your demise so that they can take her without much resistance.
With her immortality and healing factor,she would have to feed me hers. I shudder to think of doing that...
I'm not a slack-jawed faggot and can sustain myself in the wilderness, we'd make it.
Hypothetically if there was literally nothing but sand and no way to leave the island, we'd just die together. Why would I put her through the act of eating her husbando if she's going to die alone shortly after that food source runs out.