Because people are adults breh and life ain't so easy.
All these books teach forgiveness for a reason. A lot of stuff ain't gonna be perfect like we want it. I asked if there was someway they could work it out, I never said he needed to work it out. I don't fully know his and her situation.
Plenty of people work through betrayal and some other real hardcore tragedy.
I know a dude whose girl aborted his first child without him knowing, he was devastated, they worked through it and now have another child together years later.
I know a woman whose man slept with her sister and got another girl pregnant while they were together. They worked through it and they still together with kids.
People go through wild Shyte in their relationships. I can't call it. Not everybody is going to live their life through a catchy motto or judging and laughing at other people's mistakes. None of these relationships perfect, man