I don't see why a ghost and an alien can't live happily ever after. In fact, I think it would be more credible for Lois and Clark to come to some sort of relationship situation with her being dead than for her to miraculously, suddenly regain her life after being shot in the chest and being dead for several hours.
Clark has that 'vision gizmo' thing, maybe that will help.
Tank (who passes along a bit of advice for Lois... concentration is the key)
