Dealing with Racist Comments from Intimate Partner

White girl here. He said something that hurt you and it's his responsibility to own up to that. Since he didn't, and he got offended, and you're having to try again—that's a whole lot of emotional labor that you have to carry when he's the one that needs to step up and put in the work to make it right. You get to choose if that is how you want to use your energy but I promise you there are a lot of other folks out there willing to put in more work for you (and probably ones who won't make that kinda mistake to begin with). And if anything in my comment doesn't sit well, trust yourself first! I'd rather you be empowered here than me be right. You deserve that.

I agree you should quit talking to him

You said you already told him but I'd try one last time to make it clear that regardless of how deep he feels it is, it bothers you and he should stop saying things like that. This would go even if the comments were not racist (it's definitely worse that they are tho)

So I’m taking it this wasn’t a satirical Borat style comment that is meant to showcase and ridicule the worst parts of society. But yeah this is definitely a microagression. Maybe find him a documentary about this and use that to springboard a conversation?