Delayed Ejaculation??

My partner of 2 years has always taken a very long time to orgasm. A minimum of 30-45 minutes regardless of what we’re doing, sometimes up to 2 hours or he won’t orgasm at all. I’ve been researching DE and it fits our sex life perfectly. Has anyone else experienced this with their partner? I can’t help but feel like I’m not good enough, which is why he takes so long. I know that’s not the case, but I’m struggling. At this point it takes so long that after 15-20 minutes it’s not enjoyable anymore and I get annoyed. Please don’t comment saying that we won’t workout or we aren’t sexually compatible. I love him to pieces and I want to help with work through this. I guess I’m looking for support from people who have been in the same situation and how they’ve coped with it. Thanks everyone!😌