What do you think of open marriages? Does anyone watch ' Lo sportello di forum' here?

A married couple have an open relationship.. the husband has a lover who she knows about and the wife(and is so chill about it) stays with him because of the money everybody assumes.
Husband says he loves the wife that's why he's still with her

So when the son figured it out he slept with his father's lover to try and prove something ..and the parents want to kick him out of the house

P.s DO YOU THINK CHILDREN HAVE A SAY IN THEIR PERCENT'S RELATIONSHIP?