I participated in my first MFMFF fivesome this weekend with Ume, Gene, Master, and Lupa. It was originally supposed to be a foursome, but we picked up Lupa on the way. :D
It was a lot of fun, even though it was mostly "one guy on this bed, one guy on this bed, ladies switch up occasionally." I suppose that's what'll happen when you have one straight guy and one mostly-straight guy. I kind of wish I had a little more time to fuck Ume, but Master called the safeword and requested we change partners. At first I was worried that I'd somehow done something wrong - had I broken a rule without realizing it? had I done something to trigger jealousy? - but he says he enjoyed the experience, so I suppose I shouldn't fret about it. He's always taken safewords much less... hmmm... seriously? than me. As in, I tend to think (whether rightly or wrongly) that safewords should only be used for "WHOA BACK THE FUCK UP" situations, while he uses them more as in, "time out, I'm breaking character for a sec," such as if I just cracked a joke that made him giggle in a very un-domly matter.
We all agreed that it'd be fun to do again sometime. I hope that winds up happening.
Although I think I'd like to take a more toppy (or at least switchy/combative) role with Ume next time we're together. While I didn't have a problem being subby towards him, it definitely wasn't the same as submitting to Master. Then again, it's likely no one else can replicate the way Master makes me feel.
I'm starting to think that I'm more a straight-up switch, and there's just something about Master that brings out the uber-sub in me.