Breaking Up
Breaking up reads as a sign of change and independence rather than of a real parting. Splitting with a partner often becomes the occasion to look at the relationship again and rediscover what you value in it. Parting calmly means the sorting is nearly done; clinging on means a knot remains. If things really are shaky between you, this dream is not a forecast but a scene worry built — don't start a fight over it.
A dream of breaking up comes even when nothing is ending in real life. Old readings took the parting scene not as an ending but as the tying off of a knot. Less that a relationship ends than that the way you are in it shifts once. The feeling you had in the scene of parting is the heart of the reading.
Readings by Situation
Parting calmly
It means the settling in your mind is nearly done. If there was little regret, read it as a sign that you have already taken what that relationship had for you.
Holding on while they leave
It means a knot is still there. There is something unsaid or a feeling unsettled, so it is closer to a sign to talk than a sign to end anything.
Parting from a partner and waking relieved
It means something in the present relationship weighs on you. That is not the same as wanting to leave; it is more accurate to read it as some part of the relationship being heavy.
Parting again from someone from your past
Dreaming the same parting repeatedly means the matter has not finished in your mind. It is the kind that time resolves, so there is no need to hurry it.
If your relationship is genuinely unsteady just now, this dream is a scene made by worry and not a forecast. We would not advise quarrelling, or ending anything, on the strength of it.