The pattern seems to be the same. Maybe I am wrong but this is what I see from my experience and that of others I know.
They seem to want zero responsibility. Not for other people or spending.
Our relationship was calm and safe. They want conflict, argument, excitement and seem to complain about but relish the stress and drama.
If you are calm, dont react but listen and consider, they dont acknowledge it, but they seem to need this on one hand.
They react badly to boundaries being set, the truth being told, responsibilty for their actions. They dont seem to consider their family, children, loss of reputation or everything that has been worked for. Selfish, yet they always say...I have worked for everyone else, now it is 'my time'. As parents and family, dont we all?
The Other person is a sounding board, agreeing and reinforcing these sentiments. They are often crude, jouvenile, ill mannered , rude, self important and self aware.
The best thing you can do is ignore the Other person, dont acknowledge, dont communicate, give them no importance, they are not important.
To react, communicate or acknowledge simple gives them power.
Take that power away.
They (other person) dont exist.
Be calm, be strong, have your own life.
They both will hate it, but dont let them affect you, take their power away. Allow this one fact to motivate your calmness and independence.
They will not know how to react, because you cannot cause a fight alone.
They crave attention for their bad behaviour, almost as if any publicity is good publicity.
They crave excitement, dont give it to them. Give them calm, stable , security, but set boundaries they can not cross.
Dont argue, react or discuss, simply listen, learn and find your way.
Remember children with a tantrum, they want firm love and be prepared to walk away from a tantrum.
Be prepared to have your own tantrum if it helps. But let them play their game alone.
Life is good, once you understand.
We make our own happiness and everyone likes to be with happy people.
One man's junk is another's treasure and life goes on. Make yourself into a happy treasure. :-)