NEVER NEVER NEVER happen!!!
Kito is our dog, we adopted him together one month before our wedding. The first time we went out, he told me about the 2 rottweilers he had before he moved, and how much he missed them--I knew wanting dogs wouldn't be a problem!!! His rottys are in good hands with a friend back home, and we visit them when we go there.
He's also really pushing for another dog, and he is the one who tracked Kito down in the first place.

On the other hand, if we were to split up, I get custody of him--no question