boyfriend want me to choose

So, when I was 11, my parents gave me a cat, I'm now 23 and he still lives with me. I'm now a Mother, but now I dont even recognize my boyfriend. We always fight, and he gets mad at me for ridiculous things, like I forgot my son's toy in the car or other small things. Now, he hates my cat and he cant even hear I'm meowing. So this morning, he told me: if your cat is not leaving, then I'm leaving.