My son stayed friends with people he met in middle-school and high school on into young adulthood. When I meet the parents around town we catch up on how our kids are doing, but we don't socialize. My favorite Mom in this group died of ovarian cancer two years ago. When she was in remission we would meet and take walks together. She was the bravest woman I ever met and I still think of her often. She was just so positive even when very ill and I just loved her. Her son is doing very well and recently got married and my son was at the wedding. They are still close friends. So the story of friendship continues to roll out in their futures.