HELP PLEASE THIS IS GETTING BAD?

i posted before about the farting in each others mouths before thing with my bf but thats ok now im used to it but now he wants to eat each others poo and not just before its everytime i go to the toilet he will tell me not to flush and will eat some of it in front of me and he got me to try his and i almost threw up because it tasted horrible please help me i dont want to lose him but i really dont like the taste of it =/