Since your last relationship was so dysfunctional, I wonder if the reason you feel uncomfortable with all this kind attention is because you don't feel like you deserve it. Then you look for ways to pick it apart, such as, is he a co-dependent? There must be something wrong with him, right? Why else would he want to be nice to you, right? You are probably not used to it, because you had to play caretaker for so long -- taking care of your A, as well as yourself.
Well, you certainly deserve it. Give yourself (and Mr. New-guy) a break. He sounds really wonderful. Enjoy being babied.