My boyfriends cum taste so nasty

Su

My boyfriend keeps asking me to give him head (oral sex). And every time I ask him if he’s been eating right because he precums and i could taste his nastyness before he actually finishes. He always says yes and it still tastes soo gross. He always telling me how much he wants head but like the taste is not bearable at all. I can’t do it!!!!! Its fucking torture and I gagged at the taste. Help please 💔