I am in the exact same boat as you. I live with my boyfriend, and he is a meat eater. I tried for months and months to ask him to give it a go. He never did. We had countless fights about it, he refused to watch the videos on it. He says that animals are there for us to eat. They are bread for us to eat. I used to get so upset, cry, become frustrated. It was too much. I thought, before I made the choice to become a vegan, I used to do all the things that he does, and I used to think it was normal, the way of life. I now see it as this. If two years ago, someone I was dating asked me to completely change my lifestyle to keep them happy for something that I didnt feel strongly about, I wouldnt be happy. He is his own person. And he makes his own decisions. Its taken me so long to final get to this point. But now I am here, I realize that no one can push a way of life against someone.
Becoming vegetarian or vegan after a life time of consuming meat is hard. And without the love of animals like us vegans have, meat eaters dont have the motivation to do it.
Try and be paitent. My man still eats meat, but he has cut down on alot of red meat, he barley eats it at all. He eats alot of fish, and chicken. And im ok with it, because I know he has cut back on something that he loved for me. Its not everything but its something. And to me, that shows that he does care.
If he woke up tomorrow and decided that he wanted to join a religious cult, I would support it, but I would not join myself. Because I dont believe in it.
Be paitent

If you love your man, and before you went vegetarian you had a great relationship, and you were happy, then respect that he has his life choices and you have yours. Im sure he isnt saying "if you dont eat meat, I cant be with you". Respect each others views.
I hope this helps.