Based off what Lisa posted, he doesnt seem to have any integrity or morals, values etc. If he will do his sister, he will do anybodys. Of course hes keeping it secret because he knows what he did was sick and doesnt want to be viewed as a creep or pervert, thats the only reasons why. If he felt that way then why would he keep those memories, If he felt it was wrong he wouldnt did it in the first place, yes I had a relationship with a married man, yes I screwed a married man, screwing a sister or brother and recording it is worst, yes we went on vacations, better it be a married man then a sibling. if he thought it was wrong their relationship would be different, he just dont want anyone else to know but he likes what they did. Duh! Smdh