2 Samuel 13:37-41

Now Absalom had fled and gone to Talmai the son of Ammihud, the king of Geshur. And David mourned for his son every day.

So Absalom had fled and gone to Geshur, and was there for three years.

And the heart of King David longed to go out to Absalom; for he was comforted regarding Amnon, since he was dead.