She was my maid of honor. She knew what he did to me. She knew my healing journey. Six months after we broke up, she started sleeping with him. I found out through a mutual friend. I confronted her. She said, "You were done with him, so what is the problem?" The problem is loyalty. The problem is timing. The problem is that some boundaries are not about ownership; they are about respect. I still invited her to my wedding because I refuse to look bitter. But I did not make her a bridesmaid. Some forgiveness is civil, not close. Would you forgive a friend who dated your ex? Is the "ex code" real or possessive?