I think Dharma is right on.
I've had dreams before where I've lost people close to me. I've had dreams about losing my wife and one of my daughters.
These dreams are highly emotional for me and always leave me feeling an accute sadness.
These are not prophetic dreams though. These are nudges from Spirit letting me know the nature of my relationship with that person.
I also agree that you need to let these emotions flow.
Einstein theorized that E=MC2
E=Energy
emotion = E-motion = Energy in motion.
Allowing any emotion to linger too long causes it to become toxic.
Good luck!