Boyfriend's girl stole him, I fucked her dad — didn't see that coming?

A woman in a black dress and thigh-highs sits on a couch, looking upset while subtitles reveal she suspects her boyfriend is with another girl. She then performs oral sex on a man lying down, followed by vaginal intercourse from behind on the same couch. Her expressions shift from contemplative to engaged as they continue multiple positions, including her riding him face-to-face.