Not going down😬

I have a problem with my partner not going down on me. We have been together for 8 months and he's done it twice. He told me he use to go down on his ex all the time. I wasn't to bothered til he said that but now I'm taking it personally and wondering if I'm so wrong and gross down there. I wouldn't mine if I wasn't going down on him but I am all the time. Maybe I should stop that til he starts on me haha