No.
No.
I’ve known quite a few “certified” geniuses with the emotional intelligence of a gnat and this is usually their excuse too. It used to be my excuse as well, and then I realized, if a brain moves that fast, good news - you can train it not to speak.
So, I get it. You think this is something you can’t “help.” Good news; you can. Everyone else with ADHD makes their spouse upset sometimes too. But those of us who want to keep our marriage, we use the knowledge available and the plasticity of our brains to develop a two-second delay filter because we care, and because even ADHD brains have the plasticity to train. I am NOT trying to pretend this is an easy thing to do, but if your level of impulsivity is hurting the people you love most, it’s time to get help.
It sounds like you already have your ADHD diagnosis, so just tell your GP you need to get some counseling because your ADHD-related impulsivity is affecting your marriage. Just regular counseling. Nothing specialized needed. Any counselor that matches your learning style can help.
Schedule the GP appointment, apologize to your DH for upsetting him, and tell him you understand that this is something that upset him deeply, you understand he’s upset about your impulsivity in the past as well, you want to stop causing unintentional harm, and you’ve made an appointment to get advice for next steps with your GP.
Do not apologize to him if you think this isn’t your fault at all because brain is brain. You will do it again and again, if that’s the case, it will keep building the resentment he already had (that’s why this blew up; his emotions over his mother PLUS past resentment for your ADHD-related impulsivity excuses). Apologies require real action and introspection if you have ADHD, to make behavioral change “stick.”
This is NOT me blaming you.
I get that you didn’t mean to hurt him. I have ADHD and do the same thing sometimes. But my DH also knows I’m actively working on it in therapy and willing to try medication. It’s made a huge difference here; maybe it could over there as well.