bru what should i do with this situation??!!

so today i was arguing with my old fling or something about how he told me another girl is gonna be better then me so i told him bluntly that he tasted another guy cum just by kissing me, and making out with me right now he’s spamming my cell and texting me that i’m gross and idk what to say after telling him that information cuz i thought it would be funny and just finally tell him that he tasted another guys cum