What happens when "Life Mate" dies??

[Raiden]

Considering the fact that their bond is probably one that is biological and not merely emotional (i.e., something involving irreversible brain plasticity and a separate section of the brain dedicated to tsaheylu with that person), it probably wouldn't be nearly as easy to bond with a new person if one dies.

Not only that, but I'm sure that the loss of that person (and thus the loss of pleasure-causing neurotransmitters during tsaheylu with them) would cause an unparalleled amount of despair when/if that person is lost.