Of course it’s hard when someone we love says something unkind to us.
Our intimate partners know us better than most anyone else and they can say very hurtful things, seemingly with the intent to make us share in their internal misery.
It’s best to develop a thick skin, where these insults roll off without leaving a scratch. Easier said than done, I know.
I’ve developed a habit of agreeing with the insults that are accurate, then adding my two cents about my personal failings. I’m terrible at time management and always assume I’ll get more done than is possible. My husband is timely to the minute, a habit he developed as a lawyer, having to account for all his time in 15 minute increments. You can see how we can have issues.
So when he makes cutting remarks about my timeliness, I add on more detail as I agree with him. It takes away the “fun” for him when his insults don’t register as insults to me.
Also, many of our members here volunteer to listen to a litany of complaints about themselves in an effort to be open. There’s no reason why you need to do this. You can say something like “I’m not feeling comfortable listening to a list of my personal faults right now. If we can work out a compromise on something, I’m available to hear that.”
Here’s an article that might be helpful as you contemplate different strategies:
https://bpdfamily.com/content/triggering-and-mindfulness-and-wise-mind