My date canceled our third date….what should I do?

So this last Thursday, he canceled on our third date. His parents had to work late Friday night so I didn’t get a chance to meet them. He said he had to think about some things and he wasn’t happy with the fact that I introduced him to my family after warning him that their racist. This was last Saturday. I only introduced him to the ones that aren’t racist. He had to talk to me when he drove me home and said I set him up for humiliation because of knew most of my dads side of the family is racist and they insulted him and yelled at me for darkening our family up. I told him I’m sorry about my families behavior and I really do like him and forget their opinions. He told me he thinks I used him to get back at my family. He was a bit hurt because he really likes me. I was shocked. That wasn’t true. After he dripped me off I told him I’ll see him at work and he gave me a cold, “Yeah….bye.” He’s half Native American and half white. I’m white.
He hasn’t texted me since and avoided me at work. I said hi to him and he coldly said hey and gave me the cold shoulder. Two days ago at work he canceled our third date because he had to think about if he should move to the next date with me. I’m worried he’s going to see some else. I didn’t use him and I kept telling him. I really do like him.
What do I do?? We’ve been seeing each other for a while. Help!