She said we are both miserable and it needs to end.
Mine said and still says the same thing. He's been absolutely horrible to me and the kids, so when he goes "I'm the sensible guy here and this hell has to end", it drives me nuts.
Yeah, they create chaos and then acknowledge the existence of this chaos, so that the end result is "we must end the r/s".
They don't fight whatsoever for the relationship, and that love they said they felt for us just evaporates.
In fact, it's not "for our own good" that they want to break up, it's only because RIGHT NOW that's what they feel like doing, full stop. It's a very selfish feeling, and has nothing to do with being sensible, or trying no to make things worse.
However, being the one who always has to remind them of the love we shared is an exhausting and depressing process. You'd better stop trying to "save" the relationship, because that gives her power that she shouldn't have by being in the position of the one who keeps destroying, hurts, or gives conditions.