If the person loves me as much as I love her/him, then I would die with this person because neither of us could live without each other. And then our spirits would haunt this person till his own death. Hehehe
It depends on what kind of love we are talking about: whether is love towards a son, daughter, brother, sister, parents, lovers, wife, girlfriend, etc. I might or might not kill the 5. And, of course, my My spirit full of vengeance would return from the world of the dead and It would not rest until It gave death to the person who dared to endanger my loved ones. Mwahahaha
Thanks for commenting 
A Love at the level of the Soul is something that sounds beautiful and it seems that few people reach it in this life, if that were the case you could die to save the life of the other person, of course that would leave you the terrible burden of carrying our death ... that remorse can be terrible, I've heard about the survivor's syndrome and it seems that it can be very hard.
On the other hand, tying the Soul to this world for revenge sounds like a horror movie :) Well, I think it is a possible option, but some would prefer not to remain condemned to wander through this world ... maybe if the danger is not over and we have to take care of the people we left behind (eliminating the threats that remain), maybe if we are very likely to remain as guardian spirits.
I guess it is.
Hahaha. Also, creating more karma!
Sounds beautiful