My boyfriend is being aggressive?

I (23F) slept over in my BFs house (23M), I woke up and went to the bathroom and he was fighting verbally with his mom, and then I heard some things breaking, it seemed like he threw them.

Then I went to his room and his mother came and said that he broke some stuff and there was something expensive, so she said she also wanted to break something from his room like he did. She also told me he punched her door.

Then my boyfriend came and told me we should go, because he didn’t want his mom telling me bad stuff about him. His mother went out of his room and he was telling me to get dressed to go. We talked about what he did and I told him he shouldn’t be throwing his mother’s stuff because that would only make everything worse and he told me “shut your mouth if you don’t know what you’re talking about”.

So we went out and I didn’t want to talk to him. I told him that regardless from what happened with his mom he shouldn’t be talking to me like that.

Later, he was saying that his mom was exaggerating everything because there was a car fine from his car, and his mother was saying there were three, he also came to tell her that he felt sick and had a sore throat hurt and wanted to go to the doctors but he had to go to work, and his mom was telling him he should go or they are going to fire him, she was also blaming him that he got sick because he is vegetarian, and he said he got very mad and threw some stuff to the ground but he didn’t know there was something expensive.

The rest is in the description.
Updates
9 mo
He told me she was bothering him a lot and he’s is tired of that, she is always telling him to stop being vegetarian and even when she is sick she says she won't go to the hospital unless he stops being vegetarian.
He told me that his mom did some things to him like that too, that she threw his clothes from the window and even the TV.
After that he apologized a lot of times for talking to me like that, although there was a moment where he said that he didn’t say anything that bad.
Updates
9 mo
He also told me that people that have that situations with their family understand him, and that I don’t have fights like that with my parents (which is true). And then he apologized again for speaking like that to me and told me if I wanted some time to think and I said yes.
Also: they both have BPD.
My boyfriend is being aggressive?
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