You want Emma to suck your cock while she takes Sophia's cock

The sight of your girlfriend being fucked by her best friend - someone so hot that you didn't even realize she had a cock until recently - is too much for you. You can't just stand there and not join in. Your cock feels like it's going to burst if it doesn't get some serious attention. You shed your clothing and stand in front of the couch the girls are fucking on. You direct them to change positions and soon Sophia is taking Emma doggy-style while Emma sucks on your cock.

You watch your cock slide in and out of Emma's mouth as her body shakes from Sophia's thrusts. You grab her by the hair, close to her scalp, to help steady her and hold her in place so that you can increase your own thrusts. She opens her mouth wide - making her mouth available to your **** and you begin to truly fuck her mouth.

You are so focused on Emma's oral work you hadn't been watching Sophia at all, but when you look up she's looking right at you, as beautiful as ever - but her prudishness is long gone, she's finally in her element - broken out of her shell.