My DS was 4 months old when I had the realisation that I really, really loved him. I didn't conciously 'dislike' him or anything - I would of done anything to protect him and keep him safe, I thought he was gorgeous and I certainly liked him but one day it just hit me so strongly about how much I loved him. I even cried my feeling were so strong.
I think that you always think it will be an instant love for a baby, which for some people it certainly happens. In my case, I think it took me a while to get to know this little guy and his personality. Also dealing with learning to be a mum as well. It's was a bit like a relationship I guess.
I don't tell many people about this - I have told people that are close to me such as my sisters but that's about it. I don't feel guilty about it but I do worry that people won't understand what I mean.
Now I am definiately the same as Kelebek - we are very cuddly and always say I love you, which I love. We didn't do that in my family, so I am glad that my little family is able to show its love so freely.