My boyfriend believes that is completely okay to say the N word

I am I total loss for words right now so I will try my best to explain myself.

Been together for 2 years he's 26 I'm 22.

I'm from Nebraska he is from Michigan.

Like the title says my boyfriend believes it's perfect fine so say the N word.

The things is he's white and im half white half black. I grow up in a white family who believes that word is very very grow to say.

My boyfriend is from Michigan where I guess it's completely fine to say as if it just like any other word. He said that just how we great each other back home. He said that the meaning of the word has changed which I call BS. Words just don't up and change their meanings. He said that is all and how you pronounce the R in it I'm pretty sure it still doesn't change the meaning of the word!

I have told him in the passed that I don't want to hear him saying that word. Which I am grateful he hasn't said in front of me.

Yesterday we were coming back home from doing some errands and don't remember how it came up but I asked him if he had said it and he said yes. We arguing a bit about it in the car about it's wrong.

He said it just slipped but more then once....He was in the moment with his boys, having a good time, listening to music etc. I don't care if it did.

I feel really disrespected that he thinks it's okay to say it even if he is with his friends or family. I don't know if I want to be with someone who thinks it's okay. What if we have kids? For a example: Bobby said it to a classmate who he does not like because he's black, but daddy say it to his friend all the time. How is he gonna explain it to him that the word has a different meaning when you say it to your friends...

I would really like some advice here because I am feel very conflicted. Is this a deal breaker for anyone? I don't even know what to say to him to have him try to see my point of view?

(Sorry if there's bad grammar if there is any)

X-Posted