He’s disconnected, I was connected. now I want to run. do I tell him this?

My fiance was opening up about how he hallucinating and dissociates and everything he says he feels numb. He says even when kissing me and making love he feels physically but still feels miles apart from me. He also input that he stays with people he dosent like just because he is scared to be alone. And he always cries to me about me leaving bc he’s so scared I’ll leave him alone. And I just can’t help but feel used. I feel like he is just settling. We’re getting eloped this weekend but I don’t know if I can. I thought our connection was on a deeper level. I thought he felt what I felt and it’s like a slap in the face. I feel foolish and embarrassed. I thought we were connecting on an emotional and soulful level. I told him if we were to be intimate it has to be about the mind and not the body but he just confirmed it’s been about the body. I don’t know how to bring it up. I dont want to be selfish because he finally sharing his feelings but at the same time im really second guessing Marriage. This happened last night and I was so happy he finally opened up to me I listened and told him we can get him some therapy and I support him but I was so deeply hurt. I went to sleep just to forget about it because I don’t want to make it about my feelings. But I really don’t know what to do cuz we were getting eloped tomorrow and I genuinely can’t I don’t even know if I want to stay together if he really can’t emotionally connect with me anymore I feel so alone and so foolish I believed it was a deeper connection but I assumed, I assumed he felt how I felt and I never been so embarrassed and hurt.