FAKE IT TILL YOU MAKE IT???

so my bf and I have engaged in sexual activities that are not sex(as in dick in vag lmao). He’s eaten me out once and he’s fingered me a few times and I suck his dick every single time we are together and I always make him cum. He’s on a mission to make me cum and he spent around 15 minutes fingering me and rubbing my clit and then he ate me out for like 3 minutes and absolutely NOTHING. So I followed the porn rules and faked an orgasm and he looked so happy so how could I tell him he didn’t do it? As soon as he left I masturbated and came 5 times by myself. How do I politely help him make me cum without making him feel bad?