Maybe she let him in the house that night. If they hid the key in the bbq don’t you think she would be smart enough to change the locks? The affair was not his wishful thinking. They texted one another and he was commenting on her fb page for years.
Supposedly he helped the family with heating and ac issues. My God if you live in a $2 million home you can afford a licensed plumber.
He was helping the wife with her own ‘central heating’ problems.