Did I do anything wrong?

So there’s this guy I been getting to know ( for a possible engagement. We weren’t dating because we are muslim and that’s not allowed but we were just getting to know each other for marriage. I am 19 he is 23) I was getting to know him for almost 6months. He was very great sweet guy I liked everything about him. So we decided that we knew each other long enough and that we should talk to our parents and tell them we found someone and we are interesting in getting engaged. So he talked him mom and sisters and they told him is a bad idea to marry someone from outside their ethnicity. I talked to my mom and she’s also not on board and thinks I should marry someone from my ethnicity and culture despite him being Muslim and a good guy. So we talked to each other and said that things will be too complicated and we can’t disobey our family and get married without the blessing of our families. We came to a mutual agreement to just end the talking stage. 🥺 He asked me if we could still be friends and I told him I can’t. For me I feel very heartbroken because I imagined he was the guy I will have a future with and the idea of remaining friends and seeing him live that dream with someone else breaks me to the core. He seemed upset that I told him I can’t remain friends with him and talk to him. When I messaged him back he left me on read. The message was just me saying is best to go our separate ways and I told him I’m not angry with him and that eventually we will have to stop being friends once he gets married or once I get married and I just don’t want to get attached too much for where it will be even harder to let him go. I asked him to call me and if we could talk about it more over the phone and so I can explain to him why I feel that way but he completely ignored me. After seeing he left me on seen for 22 hours and was still posting on his story I just removed him from all of my social media. I already felt hurt and seeing he didn’t even care to what I had to say hurt me even more. Was this selfish of me to do. To remove him🥺? I feel awful but I just don’t see a friendship with someone I have so much feelings for I don’t understand why he’s angry at me. A part of me does but is it my fault ? Was I wrong to not want to stay friends? If I stay friends it will only give me the idea of a dream I know will never come true and in my mind I will always think there is a chance when I know there is not. I get so attached I just felt like I had to let him go or else I will never be able to move on. Also I know that when he gets married it will be sad for me to see even though I will be happy for him. He was the first guy I ever felt this way about. Ive been feeling very heartbroken the last couple of days.