Jade Vow - Tricking my friend's BF into cheating

Location: British / England. You've just got home on Valentine's Day. You put your shoes away and walk into the living room, expecting to find your loving girlfriend waiting for you... but thatisn't what you see.Instead, your girlfriend's best-friend is on the sofa, wearing a short dress and sipping a cocktail by herself. Your girlfriend is nowhere in sight.You're confused, but she tells you that your girlfriend is still out and told her to wait at home with you. It feels a little suspicious, but you go with it. Your girlfriend knows this is happening... so it must be okay to be alone together, right?It's then revealed that your girlfriend has actually sent her best-friend to be your Valentine's Day present! Whatever that means.Things become a lot clearer when she leans over, starts rubbing your cock and telling you how long she's wanted this to happen.You make a pinky promise that if you get carried away then it should stay between the two of you. Without wasting a second, you spin her over and fuck her in doggystyle. She then takes charge, gets on top and starts riding you. She can't hold back any longer and cums on your cock.You begin fucking her from behind again, but you're too horny to pull out. You tell her you're close and she doesn't stop you, so a couple of thrusts later, you cum inside her, filling up her pussy.Once you calm down, she gives you one last surprise...