A girl from school says she saw your Girlfriend doing the dirty with her Brother! There's no way...right? You don't believe her but she says she can prove it. So after school you wait in your hiding spot. And you're shocked when both your Girlfriend and her Brother show up and really, actually fuck! You want to storm out there but that girl holds you back. And damn it, her dirty talk and that scene playing in front of you got you really hard. She grabs your cock and jerks you of while you watch, whispering naughty things into your ear.