Blame/ Sad/ Feeling The Feeling

I had convinced myself that my husband being upset was because of his own issues and not something I had done. He now tells me it is because of me. I have apologized and he doesn’t seem to accept it. I guess he can feel how he wants. He doesn’t have to accept my apology. I guess he is right. I don’t think how he feels is my fault. It seems the best thing to do now is to experience the feeling of sadness I feel. I don’t think I want to change my thinking yet. He did say he was sorry he made me sad. I thanked him and said it was just a sad situation to me that he didn’t make me sad. Other suggestions? I think I do want to feel sad that my husband is blaming me.