I keep upsetting my partner and I don't know I'm doing it.

Hi everyone.

So my partner and I have hit a rough patch and she threw something at me which really hurt. Apparently I keep saying things which upset her (she is also ND with ADHD and can be upset quite easily) and I genuinely and honestly don't know I've done it. I literally have zero ability to lie, so I will always tell her the truth. But it seems that maybe I'm being too blunt or too honest. I love her so much and knowing I've upset her, has upset me. I certainly don't say or do anything intentionally, and it's killing me that I'm doing it and not even realising. I've always known that I lack any subtlety, but this seems to be something thats getting more noted. I am going through a really unsettled patch in my life now and I know that burn out and stress can really exacerbate ASD symptoms. But I have no idea where to start getting it under control.

Have any of you got any advice, or suffered anything similar? I'll take anything I can get right now!!!

James.