help!

so my bf and i have been dating for 4 months and we were talking for a good 5 months. we both grew up christian and have christian morals, but we have different beliefs on oral sex. i dont want to do it, but he does and he said it was okay that i didn’t and that it was my body but he also gave me an attitude as well. otherwise, he has everything i looked for in a guy and treats me very well. this is our first conflict. i honestly don’t know what to do 😭