How Do You Raise Teens Who Will Grow Up Close to Each Other?

One of my favorite photos of my kids was taken when my son was four and my daughter was two.

They are sitting side by side, with their backs to the camera, playing in the sand on the beach. She’s wearing a pink sun hat and he’s wearing an orange fisherman’s hat. While you can’t see it from the picture, I snapped the photo because my heart swelled as I watched them quietly share their sand toys without words.

I remember that day clearly, too. It had been a hassle to make it to the beach with t...