How to tell him no anal?

My fiance has taken a big interest in anal all of a sudden. He even goes as far as sending me links to toys and even purchasing some. I decided to give it a try for him but absolutely hated, it hurt and was not pleasurable at all. I told him that. Then he showed me some stuff to relax and make it easier. So I decided to give it one more go. But still hated it. Again I told him this during and outside of sex. But he makes remarks like we'll just work up to it and during sex he'll try to put toys in there. And gets confused when I literally get up and walk away. He blows up my phone constantly with it and sometimes makes remarks around family about it, which makes me even more upset. I'm at the point where he repulses me just by this behavior. Any advice?