Thanks everyone for your responses.
Should have made it clearer to start with, we were really wanting to get another dog, we had always intended on having two. I just honestly had no idea i would feel this way once it happened.
I think you are all right, i have treated Maddie like my child and need to get used to the idea that she is adaptable and will be just fine with a little less attention.
After reading everything you all wrote i have come home with a different attitude and am now playing with both of them. The little guy is growing on me.
I just need to give it some more time and things will work themselves out.
Thanks again to you all