Should I stay or leave?

I am at wits end right now and feel like I am suffocating.

I met my fiancé online three years ago and we hit it off immediately. I loved how caring he was and how he showed me so much affection. I am not 100% attracted to him being that we are the same height but I looked past the height and got to know him on a deeper level.

I’ve always dreamed of my future husband to me very intelligent and smart and being able to provide for me and my future children with him.

When we met, he didn’t have a job while I was making a good income, I supported him and eventually he moved into my place. I helped bring him back on his feet and helped him get a job. All out of love. Going out to eat, dates, whatever it was, I didn’t mind paying for it.

He doesn’t take care of himself and eats junk constantly. He’s diabetic but still eats cookies, candy, full on carb heavy diet every single day. He doesn’t perform well in the bedroom and blames it on the diabetes. I’ve been so patient and supportive throughout but I’m tired. Exhausted.

He proposed to me a year ago and our wedding was supposed to be this month but got postponed due to Coronavirus. I have not been able to sleep because I feel as though I am settling.

He is not a sharp guy, I always have to tell him what something means or how to do something that I believe a man should love learned by the time they are in their 30s. We can’t hold conversations and he sometimes prefers to be on his phone chatting with his guy friends all day but when it comes time for us to talk, it’s crickets or forced. I find myself craving conversations from others just to fill this void.

I don’t want to feel like I’m settling for someone just because they show me love and affection. There is literally nothing else that I can say I love about him except that he is a God-fearing man.

I feel terrible and a part of me wants to call of the wedding but I know everyone would be disappointed in me and shocked.

Please share any advise that you may have. I’m scared to tell a single soul because I don’t know where this is heading. Thank you.