By definition the universe is not good at impossible situations. Furthermore this isn't really an answer to the very real question of how such a set up would ever actually come about.I don't have to decide anything, or push the universe into impossible situations because the universe is very good doing that on its own.
Suicide for a dead lover isn't contrived at all, but regardless this is irrelevant. The merits and flaws of other stories do not alter the flaws of your proposed scenario.On the other hand, obviously, Romeo and Juliet wouldn't get you heartened either because, hey! come on! The ending is contrive and backwards and needs a horrendous amount of plot!
Baffling logic aside consider this a warning to watch your attitude. When asking people more knowledgable on a subject than you are to help you out you shouldn't get snarky when you don't like their answers.I guess, after all, that to be heartened you need a heart first.
Now unless there is anything more to discuss regarding the biology of this premise I think we're done here.