Breaking Point

Ok, so me and my partner have been together for a little over 2 years, and a major topic has finally blown over into a slight disagreement. Long story short, I don't climax during sex. We have tried almost everything to get me to. He's eaten me out for long period of time, I've tried being on top with no success, we've tried toys and every position we could think of. We just finished having sex and he exploded on me. "Why don't you ever fucking cum, are you not into me? What do I need to do?" I didn't have an answer for him. He's upset and I don't know what to do to fix the situation. Can someone please help or give me any kind of advice