Cheated on her boyfriend in front of him as punishment for his betrayal

Girl was dating boy for few month now. One usual day she found his letter to a lover. It was shock for the loving girl. Her boyfriend found replacement for her and is cheating behind her back. Pretty girl couldn't stand this and decided to punish her boyfriend.
He came home as usual after work and tried to have casual evening sex, but cunning girl made a trap. She proposed to tie his hands as new sex role play. Poor boy agreed and couldn't even imagine what horrible punishment his girlfriend planed. Hotty tied him to the bed and invited her horny friend for the party. She decided to cheat on her boyfriend in front of him as punishment for his betrayal. Poor cheater had to watch his girlfriend have sex right in front of him. There was nothing he could do to stop them!