Sharing Our Innermost Thoughts

Does my ex boyfriend deserves me to talk with him anymore?
He texts me sometimes and today I told him that because my immune system is very weak I am thinking to get the Covid19 vaccine and his answer was: then I will come to your grave soon …and I find this answer rude(its because he thinks all people will die after the vaccine)but still why to say that he will come to my grave soon this is so negative.After that he said that he is against vaccine and I send him some information from google about vaccine because I wanted to get him more informed ,and he said back: change the subjet .But I felt like he is devaluing me and my opinion because when I take my time to explain him something and he just orders me to change the subject I felt bad.Ok,so I asked him about his mother and how old is she and if she will get the vaccine(I was curious) and he said again:I told you to change the subject,dont you understand?no more Covid and vaccine talk,talk about something else…and I said him that its not right to intrerrupt me and order to me to stop texting my opinion and information and he said :you like to make me nervous,I told you to stop talking about this and close the subject …and he added good night and Keep in mind that if I am telling you to stop ,you do so…and I dont know if I acted so bad or he is really acting not good?Please,I would really appreciate opinion🙏