A bit tied up

I had been chatting to her new boss at a works event and we hatched a plan. A few weeks later I convinced her to be tied to the bed, blindfolded and music playing through earphones so she couldn't hear anything. Her new boss was already waiting outside in his car, as soon as she was ready I let him in and took him to the bedroom. He took his clothes off and sucked her nipples then her freshly shaven pussy, she had no idea it was him, he moved to her mouth and pushed his cock over her lips, she opened her mouth and sucked it, she did it for a few minutes before he came in her mouth. She swallowed his cum and said that it tasted different! Did she know what had just happened to her?