This spell isn't the same as the 1st Aid Repair Spell that basically stops a few cross words or an error from upsetting a love spell you are already using, this spell removes from the past an incident that has happened that cannot easily be corrected e.g. if you cannot say sorry for something you have done without it leading to a 'can of worms' being opened i.e. more trouble, and yet if you don't apologise you are in a tricky situation too and will sooner or later lose the one you love - because you are in a catch 22 situation ( damned if I do, damned if I don't ). This spell can be used to erase the incident from the minds of all those who are aware of it, so that it is forgotten and never discussed every again. This is a big operation, it doesn't actually alter the past only everyone's memory of the past especially the one you love and will lose unless something dramatic is done.
This spell can also be used to remove memories or thoughts about certain situations or incidences you have trouble dealing with.