[Locket]

Two months is NOT a lot of time at all. It's a HUGE adjustment for him, and he's still in the healing process (as it seems he might have been abused in his past home). I can't imagine how hard it is, but rehabilitating a dog takes A LOT of patience, lots of work, lots of tears, but in the end, you'll have LOTS and LOTS of triumphs.
Have you tried building his confidence through training? Try implementing NILIF (Nothing In Life Is Free), where you make him sit for he wants. For example, before you feed him, make him sit. Before taking him out, make him sit, etc. Praise Praise Praise him!
Also work slowly. If he initiates contact (jumping on the couch) just give him a treat. Don't touch him. Do that for a few weeks. If he seems to be initiating MORE contact, pet him a few times and treat him then leave him alone. Do that until he is comfortable with petting sessions.

Consult a trainer/behaviourist for more help.

And another thing...if you feel that this is too much for you, be honest with yourself. You want what is best for Jack, and while you love him, he might need more than you can give him. What's best for Jack may actually mean a more experienced home. You cannot risk your children getting bitten, and if your husband wants to get rid of him, those are not good feelings to have in the house. Do not feel bad about it, you got him out of a bad situation. I'm not saying you SHOULD find him a new home, but I know that it is probably the last option you want to consider, but it's an option you should at least consider.


I wish you all the best with Jack.