I was about to ask: What's the downside of dying, and then resurrecting in a consistent loop, to ensure that you level up dozen of levels?
Sounds extremely efficient.
And then, welp...Yeah. Gamer-brain doesn't work when the author actually makes sure to remind you that being torn apart isn't particularly pleasant. It's not normal to literally seek death in order to "get more gains".
THAT BEING THE CASE, I still would not be surprised if they seriously discussed the option of decapitating one of them swiftly, so they suffer instant death with no recollection of it.
It might fuck up their relationship, though, kek.