Imagine your father just sat you down to explain that him and your mom are going to divorce after 20+ years of marriage. Now picture yourself sitting at a bar with friends and talking about the impending divorce and all the hurt you are feeling. And one friend says they have known about your mom cheating with someone for six months. The answer to the next question is your friend has read it on your mom's FaceBook wall.
Words fail me in such instances while I feel much sympathy for the father and daughter who now have to deal with this traumatic information. There is just so much hurt and dishonesty here from the mom, I hope things get better.