My husband isn't cheating that doesn't mean he hasn't thought about it. That I do know because he has told me he has considered it. He even went to say he thought about sleeping with someone else just to hurt me but he hasn't. With everything else he has been honest with I can't see him lying about whether he is cheating or not.
Now I will admit that the property he is interested in - yes that's his mistress.
I'd rather his mistress be a motorcycle at this point.