Not sure that Mistress ever said exactly this to any of her lovers. But I suspect there was always a conversation that went something like this:
"So is your husband really OK with this?"
"Yeah. He is. He says it turns him on. And we always have hot sex when I come home after one of these nights."
I suspect they all had different reactions to this. Maybe some were a little jealous. If they had developed feelings for Mistress, the thought of her coming home to be reclaimed by her cuck was probably a little annoying. But most just shook their head, and, hopefully, knew they had lucked into a pretty sweet deal.