What would you think if somebody in a relationship said these words

[changemynamechangemynamewhen]

'I can't help it sometimes when I get frustrated my brain gets angry and it makes me nasty'

As pp have said, sounds like something a child would say.
RUN

I'd think "oh fuck. I seem to be in a relationship with someone who deals with feelings of frustration by getting angry and nasty. And blames others for it rather than taking any responsibility for himself".

And make plans to leave.

Every one feels annoyed or even angry at times , it is a human emotion.
It’s how the emotion is handled that matters.
Being nasty is a behaviour and he is responsible for his behaviour no matter what emotion he is feeling.

I'd think that I'd have to watch what I say in case it provokes that person too much. I'd think I would have to tread on eggshells around them.

Tread on eggshells around them? Try running hard in the other direction!

I really like the text that *HollowTalk" suggested. Dump and BLOCK.

I didn't say I would stay in the relationship long term but if I was already in the relationship it would make me weary of upsetting them.

I would respond, quietly, with my cold stare...

"Everybody needs to sleep sometimes "

Preferably said whilst cutting up vegetables.

We had a disagreement and he said some spiteful things. Then he came out with that gem. He says these things because he gets angry and his brain makes him nasty. He has aspergers if relevant

Our brains control everything we do. That's being human. Having aspergers does not remove self-control. He is telling you he will be nasty more often. Run.

If he really can't Control it he needs to take responsibility and avoid relationships until he has learnt some behaviour management strategies

Has the asperger's been diagnosed or is it self-diagnosed?

It's an excuse for being a c--t.

Run.

I’d think...they were too young to be in a relationship.

My response to that would be "so what".

When your partner says "you hurt me with your words" the correct response is "sorry" and not doing it again. Not some bullshit justification.

Aspergers has bog all to do with it. Not an excuse for saying horrible things especially when someone has told you they are horrible thing to say.

I get more angry at work than I do at home. I work with people that I am not in love with, or care a huge amount about. I control it in both places because a) I don’t want to get sacked and b) I don’t want to hurt the people I love.

If I heard someone in a relationship say that I would think ‘why is a 5 year old in a relationship’.

Dump him

What next?

“My brain makes me angry so I lash out”?

Anyone can get angry, we all have emotions. We all have different triggers for anger, some of them we can work on, others not.

What we can control is our behaviour and our response to our anger. We can control whether we 'get nasty' or not, and if we can't control that we should take responsibility for it and limit our interpersonal relationships while we work on it.

Feelings are fine. Behaviour can be problematic.

‘Well, you and your brain should seek anger management. You’re also now single.’

Run. That's a warning if ever there was one

Nope. You won’t change him but you can change your actions and remove yourself from the relationship.

'I can't help it' syndrome.

Bye, Felipe

My exhs solicitor actually tried to use a very similar excuse for his behaviour when I had him in court for a safety order. Needless to say the judge took a very dim view of it. Speaking from personal experience I'd be walking away.

He's just full of shit excuses isn't he?

He'll be blaming gremlins and demons on his shoulder next.

Run fast and run far.