Never got him off

So I’ve been with my so for six years, and I love him a lot and want to make him happy. We have a healthy sex life but I’ve never been able to get him off by myself. I’m extremely embarrassed about it and I kinda hate myself for it. I’ve tried blow jobs, hand jobs, and riding him but I feel like I’m just terrible at it. He says that it’s fine that I’ve never gotten him off myself, but I’m still upset about it. He says that I’m good at blow jobs and riding but I don’t believe him. Any advice? At this point I just feel useless. Especially since a lot of the porn he looks at us futanari or traps or skinny girls with big tits and a big ass, I feel like I’m not ever going to be good enough since I don’t have a dick and I’m a chubby girl. At this point I’m not even sure if he actually is attracted to me or just finds me to be “easy”