What if there was someone else who was majorly affected by the affair? Can that person bring Derek, Addison, and Mark back together? Story begins in early seasons of the show, then shows their futures. Ultimately Addek.

"Addison?" Alex choked out, his eyes growing wide at the realization of just what he was doing to the woman standing in front of him the night before. "Oh, God," he groaned under his breath. "I can't believe I felt up my boss!"

"she was a real woman with experience in life, in her job, in everything. But maybe that was just what he needed" my take on Addison's apology to Alex after the almost-kiss. Addex/Addisex