ok , so your husband is living in LALA Land "I love you You love me we are happy family". And you are not as forthcoming as you want to be with him.
Here is my two cents, you decide where you stand in all of this. putting guilt aside. do you want to work it out? do you see there being a possibility that MAYBE you will feel happy and loving towards your husband in the future? is that possibility worth pursuing in your mind? " because not everything possible means we must attain" if so then get counseling. cant afford it? read books, talk to people. perhaps on this forum, start a new thread asking if someone where in your position and how they managed to feel love again.
if you dont see that happening/want to work it out , then move on, ask for at least a separation period where the two of you share custody of the child and see how it goes, then maybe if nothing changed file for a divorce and try to be as civil as possible.