DH is lovely in many ways. He's not generally an arse, but he is about one thing. When he gets cross, he starts mumbling / muttering at me in a quiet voice. We've had issues with him being passive aggressive when we first got together, and he's a lot better now. But still does this. So it goes: we have a minor disagreement. I'll say something, he'll say something, issue gets resolved, but then as I walk away he starts mutter-mutter-fucking-muttering (because he's not happy about it and has to have the last word).
My problem is: 8 years ago I got an ear infection, and then tinnitus. As a result I have hearing loss, with the tinnitus at the same pitch as the hearing loss, so it means I can't hear low sounds - particularly quiet voices. I have been advised not to go for a hearing aid yet (my consultant said to hold out for as long as possible), and generally I hear well enough to manage just fine. My DH knows all this. He also knows that, actually, I find it deeply, deeply upsetting to be losing my hearing in this way. I don't show it, I don't dwell on it, but it's shit. And I have told him every time he mutters like that, that it upsets me, as it feels deliberate. Like: hah hah, I can be as passive aggressive as I like because YOU CAN'T HEAR ME.
I call him out on it, there and then, every time. (As in, I go back and make him repeat what he's just muttered, which he usually refuses to do as he knows he's been childish, though he then also gets angrier and ends up stomping off to mask this fact). When he's calmed down, I tell him calmly that a) it feels deliberate and b) that even if it's not, it's a gutting reminder that I am losing my hearing. He says sorry, he says he definitely doesn't do it deliberately. But then the next argument rolls around and lo and behold he's muttering again.
So, should I just suck it up and stop being so sensitive about my hearing loss (yes, IABU)? Or is he being a twat and should stop doing it (no, IANBU)? If the latter, any top tips to get him to stop?!