I was talking about my day last night to my boyfriend, and mentioned a technical problem I was dealing with at work. It has to do with a specific machine part that I can't replace due to machine age and I am trying to figure it out without having to upgrade to a more modern machine (my boss has asked me to do this because a new machine costs about $250k). My bf has zero training and experience in my field, just like I have zero training and experience in his. He jumped in with advice on what I should do, and I said I just wanted to be able to share my frustration and am not looking for a solution. He didn't like that. He told me that it's his job to fix my problems and offer advice and that I was ungrateful for his help. He then went on to say something about how I deserve to be fired for being unwilling to consider unconventional ideas.
I asked my boyfriend if he thought it was okay to talk to me like that saying I should be fired. He said he said it so yes it's obviously fine. I told him I disagreed and that I don't want him to talk to me like that. He said I can choose that or we break up.
Before last night he had never talked like this to me. We have been together for 2 years and are thinking about moving in together. Now I have doubts. Should we go to therapy since it was just one incident?
tl:dr my boyfriend gave me an ultimatum out of nowhere and I want to know what to do.