Considering that the stepfather and stepdaughter are almost the same age, I don't see anything shameful or surprising about that. Sooner or later, when the wife should have left, the stepdaughter herself would have insisted on this action. Which is actually evident in the course of the video. The stepdaughter immediately exposed her breasts without thinking. Liked her intimate hairstyle - in times of fashion for naked pubes, such exhibits cause additional desire!
This is what home sex looks like for a couple who recently got together. Still interesting and not bored, as they say household has not yet imposed its imprint on sex! And then begins the children, everyday life, the process of working and earning money... And such measured and unhurried sex is postponed on weekends, when you can sleep peacefully and do not hurry anywhere! And it's a shame, it would be nice to have it every day.
Wouldn't it suck?