I’ve never felt worse In my life

I was at the fair today with my family and my boyfriend came running up swearing and yelling , he pulled me away from my family to yell more. He called me a fucking liar and I asked him not to yell and he told me to shut the fuck up. 3 people came up to him and told him to cool down, he didn’t. He ended up punching a truck and breaking his hand. I don’t know what to do after this. Even though I didn’t lie about anything I feel bad. I took him to the doctors even after all of this happened. What do I do.?