It's just best to get divorced if someone changes their mind and decides their spouse is no longer what they desire. If his other woman was so bold to be pictured with him while trying to spite her....well....
But I have learned to remain unbiased as much as possible and not automatically take up for folks.
My uncle's wife (aunt through marriage) rallied many women in my family and got most of them riled up when she found papers for a court date regarding child support. Most were shocked and very upset.
We learned of the death of a man in the town they are from. It turns out that he was the biological father of my "cousin" (her son). My uncle raised a child that HE KNEW was not his ALL those years. He was born many years after they were married, and they were not even separated at the time (not that it makes it better). My family does not think his daughter is truly related to us either, now that everything has come out. He had two older children with his wife, but they died (one from crib death and the other from sickle cell).
My uncle felt he had earned the right to play around and wanted a son that he was confident was his and went out and made one. The craziest part is none of us have ever met him.
His wife will not allow his son to come around the family. If I was walking on the street next to him, I would never know.
I said this to say, be careful about getting caught up in people's business because no one knows what agreement a couple has and people like to play victim in the light, but who knows what they have done in the dark.
This particular man in the story you posted is an ass, but please make sure that you don't become fearful because of stories like this.
Discernment is vital, but being relaxed and not absorbing the emotions of others are as well.
ETA: I'm not saying that my uncle had a right to cheat and father a kid outside of his marriage too. He should have divorced her when he found out that my cousin was not his.