Not Your Girlfriend

You've gone round to your friend's house but bump into his girlfriend on your way to find him. She's bent over cleaning and wearing a tiny little skirt. It's causing a stir in your pants, but you shouldn't be looking at your friend's girlfriend like that! But it's too late, she's already caught you getting a good eyeful up her skirt and notices the bulge in your trousers. She's worried her boyfriend is going to clock onto it too when he sees you, so it's best you quickly sort yourself out now before he realizes you're turned on over his girlfriend!