The couple had sex with mutual attraction, so there's really something to see here. It's not a tender relationship, but a passionate one. The guy fucked his pretty brunette sister in different positions, twirling her legs and ass in the process. He did not forget about the male pleasure - there was a blowjob, and after sex he cum on his sister's face, on her heated and young skin.
It was immediately clear from the brunette what she came to the gym for. She did her exercises poorly and waited until no one else was in the gym except for her and her coach.