I don't think there is anything wrong with you. I think what you are going through is normal - at least I hope it is because I am feeling the same way. Your H's track record is similar to my W's. She has had three affairs (that I know of), moved out of the house 4 months ago, and has shown absolutely zero interest in reconciling. Yet here I sit wanting her to change her mind and choose reconcilliation - even though I know that the likelyhood of her cheating again is very high.
I think the reason why I still "want" her, and maybe why you still want Dan as well, is because the her I want is the one I fell in love with, not the her that she has become. I still have this false sense of hope that she can change back into the person she was when we first were married.