My wife's sister indulges in sexual activities with me while my wife is away, both of them enjoying the act of cuckoldry.

My wife\'s best friend loves hardcore sex and wants her brother to watch. She\'s a big fan of being fucked hard, and her husband indulges her. I\'m invited to join, and we have intense, passionate sex. She takes me deep, and he watches, turning her into a true cuckold.