Once common throughout much of western North America, the grizzly bear species currently reside in five separate populations in western Canada, Alaska, Wyoming, Montana, Idaho and Washington; and there are around 30,000 bears in Alaska.
A rebound can last forever or a week. It completely depends. If you are already looking at the relationship as a rebound then it should end soon. You will not last with a person you feel is nothing more than a rebound to you.
It really is dependent on each person and their personal addiction. The most common withdrawal times usually last somewhere between a week and 14 days. No matter how long it last, withdrawal is just the beginning of the process of healing from an addiction.