It was not a real threesome, and I doubt it was her plan as well. I feel she used the excuse of a threesome, and you, just to sleep with another girl. Of course, it doesn't cross our mind at first since "two girls together wowoowwo" in men's heads sometimes. Probably why she kind of got away with it.
You need to live a real experience, with someone who wants to do that with you and share this moment with you, truly. This was not it.
I appreciate your thoughts and input but I have no desire to do so.
It was never on my bucket list in the first place. It was one of those things that just happened, I was 19 years old at the time and I recall that many of the males I spoke to would have given their left nut to have this kind of experience.
Having said that, I confess I have had numerous other sexual experiences in my personal life before entering the hobby that I would love to recreate.