No, he knows. They're both from Ecuador. My aunt tells me that she--as well as her sister and several other women at her job--cheats on her husband all the time and he just puts up with it. Doesn't say a word about it. But I don't get the impression that it's an "open marriage" in the true sense. It's just totally bizarre.
Oh, and the sister. She was sleeping around with a man from work. The man is Dominican. The woman gets pregnant. She was several months along when one day at work, while they were all chatting during lunch, she said, out of nowhere, that she had had a dream that her child would look like San Martin de Porre. San Martin was a saint. And he was Black. Yeah.
Meh...a similar type of scam worked for Mary. Joseph didn't seem to mind.