AIBU to hate and depise ex

[Freeandsinglewater]

To the lonely maggot, (ex)
I hate you for using our son to get you GF.
I hate you for only having our son for 4 hours a week, two of them at a time. I hate the fact that your Gf bought over a puppy and scared my son. Did it take ages for you to get out the urine out of the carpet, I bet you didn't threaten to kick the crap out of the puppy. But it was ok to do it to my cat.

I hate you for abuseing me, and hope your Gf runs a fucking mile away!
That she sees all the red flags, and is saved from your misery.

To answer the question in the title: YANBU, but you will be happier when you no longer give your ex any headspace. That may take a long time.

hope you feel better for venting op, you are well rid of this sick bastard, move on and enjoy life with your son, hope your cat is o.k too.

Probably not unreasonable..
But probably also not wise..

Life is very short... don't waste it distilling hatred and bile. Holding on to a past hurt will not make life better.. but it can make life bitter.