My boyfriend is mad i wont orgasm during sex!

I don’t know what to do. 😭I love my boyfriend very much. We respect each other, were loyal and very compatible and happy. But our sex life is struggling. We are able to talk about most things effectively and communicate really well, but when it comes to sex, my boyfriend gets defensive. He says things like “you were able to cum with all these other guys, so why cant you cum with me?” in a tone that seems annoyed. And i tell him calmly and kindly, that i in fact did not, and i told him only my ex was able to make me. I have had more partners than him, and only 1 could make me cum, my sons father. I always have struggled cumming. And i think i need to feel more comfortable and build more intimacy before i can cum with him, that and he is a little judgy when it comes to it, i can kind of feel and see on his face that he wants me to cum already. Were both over thinkers so it Doesn’t help, but its like instead of just enjoying sex and being in the moment, he gets in his head and gets so upset that i cant cum, that he gets turned off and thinks i dont like him. He thinks im not into it because i cant cum, when in reality hes the most passionate lovemaking ive had and i get so turned on just looking into his eyes. I love him, and i want to fix this. His judgments and assumptions just push me away from feeling safe to cum with him. I just wish he could be more open and honest and tell me why he gets so upset and hurt about it. He takes it very personally. He even told me most of the partners he was with never came during sex, only his previous friends with benefit he has before me was able to. Hes had less partners, and he says im the hottest girl hes ever been with. I just dont know what to do, or what hes thinking. Whenever i try to explain that its not him thats the problem, he kind of shuts down or thinks I’m lying. Then when i ask if he trusts me, he says thay he does, but he doesnt trust that I really am able to cum with him at all. Ive came with him only about 4 times and ive been having sex with him for over 6 months. My ex was able to make me cum every dingle time through oral, and i think he compares himself. Anyways.. Any advice would be greatly appreciated

I will add that he knows i cum best when receiving oral. He tried going down on me for over an hour, and i still didn’t cum. I know that i should work on it and am completely willing to do what i can to orgasm to make him feel good too. I know he will probably be more into sex with me when i start cumming, but its just a hurdle we need to get over 😔