hi and welcome to yt. like everyone else has suggested, I would try and have your dh do things with you little one. Maybe start off with all three of you and slowly phase yourself out and let dh and Jack interact. (treats are always a good bribe
) Let Jack go at his pace. And yes, he is a typical yorkie...they are lap dogs and little shadows.
He is probably attached to you because you are probably his sole caretaker. I bet you are the one who feeds him and cuddles him? not that that is a bad thing, just that he's probably seeing you as the pack leader.
Good luck and I am sure things will work out for you.
My Hot Rod is a total momma's boy, as soon as I sit on the couch, he's jumping off of daddy's lap and in mine.