Your not a basket case hon..... you are a codi..... we are much different
Im not sure why you think you should feel different.... and I dont know why you thought it would be "normal" or even close letting him back home. It has been my experience that I tend to discard my feelings for the other person. You know what, right, wrong or indifferent they are my feelings and Im entitled to them. The are not wrong or bad.... they are feelings and the sooner I accept them for what they are, give them the right to be there the sooner I can take them out and deal with them.
What your husband did would be a HUGE breach of trust to me. He did this to you not the other way around so it would be his job to earn your trust again IMHO. In fact I think your either a saint or glutton for punishment for letting him come home. Dont spend time doubting your feelings on this. Once you idenity what they are you can make a choice as to if you want to change them or not.