You and your girlfriend have come to visit one of her friends for the weekend, and are staying over in her spare bedroom! But once your girlfriend has gone to bed, her friend sneaks into your room in the dark, and confesses that she has a bit of a crush on you! She wants you for herself, so strips out of her dress to reveal matching underwear, before reaching under the covers to start stroking your hard cock! She climbs on top of you, moving the blanket out of the way to get a really good look at your hard dick, before asking you to blow a nice big load all over her tits! So very naughty, especially since your girlfriend is right next to you!