why he won’t go down on me, HELPPP!!!

Anna

in the beginning of our relationship i didn’t like going down on him so we had the agreement that i didn’t give, i didn’t expect. not once did he tell me the reason why. it’s now 8 months in our relationship and i love going down on him bc it pleasures him. now that i’m giving i’m expecting. he promised me he would one night and then never did, just skipped over it like it was nothing. he finally told me the reason why and it’s bc my ph balance is off and all us girls know when that happens it can bleach our underwear. well that’s the reason, he told me it wasn’t a bad smell but it wasn’t a sexy smell for him. idk what to do to help this. i want him to go down on me and i suggested the flavored lube that’s okay to be ingested, and he was 100000% unsure/ uncomfortable with it. what can i do please help me