That was the only symptom I had pre-diagnosis. I am usually very even-tempered but the first time I realised I was 'off' was when my poor mum was on the receiving end of a full-blown tantrum,
@Emmasndco - from her 59 yr-old daughter! To my eternal regret, I shouted at my lovely, gentle elderly cat one morning (as cat slaves know, they will insist on being alarms...) not realising she was actually very ill and had to be pts that afternoon. Since cutting down on carbs, I am back to normal. Good advice above, but also seek out coping strategies when you feel the stress is taking you over. I think there are other members on the Forum who have such strategies but a web search would help. A step outside yourself (if that makes sense) just for a moment or two, and breathe in slowly for a count of four, hold for a bit, and then out for a count of seven, or whichever length suits. I hope you and your boyfriend can patch things up.