Most of you should write Mars on your location.
In 9 cases out of 10 the wife of a big and famous celebrity actually expects her husband to cheat on her and is aware that he'll cheat on her when she gets married to the guy.
As for not knowing nothing about how their relationship works, yes, you don't, so how can you judge? There are couples who invite other couples for sex to boost their sexual life, there are women who learned to live with their husband cheating on them as long as he provides a good life for them and the children, there are x, y, z. You have absolutely no idea about Rooney's personal life.
And it's interesting that some of you wouldn't have criticized Rooney at all if this prostitute was one of his 15 wifes and he had sex with her while one of the wifes was pregnant.