Ekkies will bond with the whole family, they are not one person birds. Try to remember this. They will bond more to one person sometimes, but it is not an exclusive bond. They are different with each person they bond to.
My female eclectus has a strong bond with me and my wife. But she is different with my wife. She will make these excited sweet sounds just at the sound of her voice. And in many ways, I can tell she prefers the female company. On the other hand, she has totally bonded with me, and we have our things we do together, and she will fly to both of us.
We just introduced a male ekkie to the flock, and he seems to prefer men. He is not a huge fan of my wife, although he is starting to bond with her. He more readily will come to me, and seems to enjoy being with me more. His previous owner was a male, and he bonded to him more than his wife as well, but the previous owners also told me that he would talk more to the wife, even though apparently bonded to the husband.
So they are just different with everyone. I used to get jealous when I thought my female was bonding more to my wife, or liked her more. But then I realized she just has her own relationship to both of us. I try to create a family circumstance as much as possible with these birds. I have them both with us at dinner, and tried to keep them in a collective, to keep things balanced, and because I can tell they really like that. In the wild, they exist in family units, so it is instinctive for them.
Don't think about it too much, Kokomo will bond to your entire family, especially you and your husband. It will just take some time, and he will develop his unique relationship to each one of you. How old is he anyways?