Hypocrite?
My sister was in an open relationship. She started seeing another guy besides her boyfriend. Months into the second relationship, the guy made a confession. He, too, had been seeing someone else the whole time. My sister dumped him.
He, too, had been seeing someone else the whole time. Months into the second relationship, the guy made a confession. She started seeing another guy besides her boyfriend. My sister was in an open relationship. My sister dumped him.