LDR just hit rock bottom!!!!

Hello, SO I am dating this guy who is so wonderful. He is sweet, smart, and intelligent and he is dishonest. He struggles with pride, porn, masturbation, and lying. And just recently confessed to me that he cheated and I found out(not by him)the woman is a married woman. But he is also a virgin! If I were the one on the other side I'd respond, Leave HIM, He is NOT your husband, you two have no need to stay together if he is constantly defiling himself and being dishonest to you! But I am the one in this predicament. I do have the choice to leave him but I stay because I realize he has potential, along with greater qualities! I also realized I don't want to leave him alone because I wouldn't want that for myself. It seems logical to leave him but for some reason I think he is my husband. It makes me so happy to think about being with him and building with him. By the way we are in a long distant relationship, which makes it very easy for him to hide and lie about so much. I am just venting now though it sounds foolish. The desires he confessed that he has are very much like mines. We have goals and plans and only I am living up to them. Oh my this sounds so silly but I have faith that it will/ could work out, it’s just he has made so many mistakes and though they hurt him they hurt me as well to see him continue to be fooled. To see him live such a messy life when he can be a better man is doleful. He is afraid, and worries about what people think of him tooo much, and he seems to give into temptation too often. I can admit I have my personal struggles I am not perfect and I try and remind him so that he doesn’t feel I am better than him but know I understand and he does not have to continue to lie to me. It’s so crazy because I can move on and be with anyone I want but I wait for him, hoping he would see what I see and we could move on. But from the looks of it we just may be done for good. I do not know what else to do. I love him and I told him we can split so that he can figure out what he wants and be a better man. But he says no it wouldn’t get better splitting up he’d still be alone….