[MFF] We (m27f25) tied down and dominated our unicorn (f27) threesome

Background: After a year off, my fiancée [F25] and I [M26] decided to start having threesome again. She is bisexual and loves the opportunity to sleep with women! We meet our unicorn on tinder a few months ago and on our first date with her, somehow the topic of a swingers club in our city came up and she expressed interest. Fast forward to this weekend. We had originally planned to attend this swinger club near us. Unfortunately my fiancée has been under immense stress from her career and it threw off her cycle. We were on the verge of calling off the night but thought we’d at least take our third out to dinner, a gesture of gratitude for canceling a night we had all been looking forward to experiencing. Before she came over to head out for dinner, I suggested the idea to my fiancée that we tie her to our bed and dominate her. My fiancée wasn’t sure that she liked the idea that she wouldn’t be as involved but didn’t take it off the table. During dinner and after a couple drinks, I pitched the idea and to our surprise, our third said that she’d be down to try. We proceeded to hit up a couple bars. My fiancée gets extremely sexual the more she drinks. When we got home, we made our way to the bedroom.