Yes but when she agreed to go along with the charade, She signed up to dealing with the inevitable fallout. She must have factored that this could happen.
He works with one of his daughters. They've all worked together to keep his predatory behaviour with young boys he has power over out of the tabloids.
They're complicit.
There are two types of these men who enter into straight relationships. The first kind, like Gareth Thomas, are loathsome. They live a lie, sleep around with men behind their wife's back and marry to try and suppress their sexuality.
Then there are those who marry, but it's largely a marriage of convenience. Either that, or the husband is bi or gay and doesn't make a secret of it. To some people, appearances count for everything, and if they're seen as an attractive couple with a nice house and car, then that's all that matters to them.
I suspect, given this man is a hairdresser, that this may not have come as a surprise to his wife. I know of two male hairdressers who are now in relationships with women, sharing a life together, but have been with other men in the past.
This is common knowledge and there's no way their partners can be unaware of it.