Sorry, I have to add too that as he is very new to your household, you all may have to adjust your behavior so as not to upset him and cause him to exhibit the behavior you are trying to curb. This can be confusing him a great deal.
As he was adopted, you don't know his history, and you do want him to feel comfortable, so no teasing. It can take months for a previously owned dog to learn to trust his new owners. You really need to allow him time to adjust.
It took my male eight months before he would lick my cheek. I had given up that it was ever going to happen. I cried when it did, it was so unexpected. Now I can't stop it! And don't want to!
