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.
They may use this relationship as a source of sex or just someone to go to parties with. In general, rebound relationships do not last for long. The duration of the relationship depends on a few factors. If the individual on the rebound is available and emotionally stable, the new relationship has a chance of lasting.