They do get sooooo attached. Kodah is just starting to get a little more attached to me than my husband, simply because I am with her all day. Our last Yorkie, Mocha, would sit on the back of the sofa & watch for me until I got home. If someone let her outside, she would wait at the end of the driveway & knew my car when she saw it! If we were ever out of town, it would drive my kids crazy because she would sit in the living room & cry all night for me - eventually she would sleep with one of my girls if we were gone for several days. I could hardly stand thinking about her doing this while I was gone!!! & I found myself staying home because of her!
I think that is one reason we are seriously looking at getting another puppy to raise alongside Kodah - so they have each other when we are gone!! They are just like having permanent two-year-old kids!