Should I block him?

So I have been seeing this guy for almost 6 months and we talked about our future and marriage. I know it seems early but in my culture that is how it typically is we get married early. So we felt like we knew each other enough and decided to talk to our families about it and he told me his mother and sister told him not to marry me because I am from a different ethnic background as they are. We are the same religion and are from the same region in Africa. I was so hurt by this and this being his reason to leave. I was willing to fight for him but it seemed like he didn’t for me. After all this he asked if we can stay friends I kept my cool on the phone and said yea and come to mutual agreements we should just end the talking stage:relationship. The next day I had a change of heart and told him I can’t be friends anymore because he texted me the next day acting casually like nothing happened. He didn’t even give me time like he said he would. I have too much feelings for him to just be friends. I am hurting. I sent him a paragraph wishing him the best in life and that I am happy I got to meet him and how this friendship can’t work. In his response he seemed upset. He said “ Goodbye” and I asked him if he was angry with me and he just left me on read..... what did I do wrong? Why do I feel so bad. I apologized to him and still no response. Should I just block him. I hate being on bad terms. I don’t understand this at all. I don’t want him to be mad at me....