Before Kourtney and I invited Celeste into our marriage, I never felt incomplete. There was never anything missing. So many people assume that your marriage must be lacking if you’re looking to add a third partner into the mix. But Celeste wasn’t meant to fill a void. She enhanced our lives, our relationship, in a way that no one else could have. The three of us were inseparable in high school, and it’s no different now. She’s a part of us.