Ugh, I know that hurts to see them be so "loyal" to someone else when they have been completely disloyal to you. I had that happen early on after BD and couldn't believe what I was hearing. Especially when OW made threats on her FB page to my family. My H had calmly defended her. I was like 'yeah, i'm over this'. Not a battle I even want to be a part of especially when someone is morally corrupt and indecent.
Keep believing you are strong, even when you don't feel it. Post here and you won't feel so alone after a while.
Take care.
Me:49 H:47 S: 16 T:27 M:25 My EA: 2001 His PA: 10/2007, 6/2013 Separated, but H still in house
Find your Shambala: a place of peace and happiness.