After being in your family for 7 years, he should remain that way.

I don't agree, I can totally understand where you are coming from about not feeling the mutual love between you & jake. Dogs are kinda like people in that each is an individual and has his/her own personality. Sometimes we "meet" the right one and we bond. Sometimes that bond never happens. It doesn't mean we don't love them. It's really hard to tell as puppies because they haven't even developed their own personalities yet.
With my Tyr we instantly bonded, and though I've loved and owned a couple of other dogs in the past-I've never felt that strong bond like this before.
Ginger on the other hand was a rescue and even though I got her when she was only 13 weeks, the situation in which I took her in was a matter of leaving her to die or take her in-she was never a foster, so she is basically mine now. But I would never have "chosen" her. I love her now- but I have to admit - if family or a good freind really wanted her and she seemed to really like them - and I knew in going to that home she would be well cared for and loved - I would have to consider it. Of course Ginger is only 13 months old now, so it is a little different.
I say give it a try and if everyone seems happy- Yeah!