MmF is when one man is bi, and i am sure you are looking for M1fM2, so f is in between and Ms try not to touch each other , except inevitable touches in DP, if f agrees to DP. It is an interesting idea, but you have already a critical number of unknowns in this math equation, I.e. x=f=unknown and y=M2=unknown. Whereas, M1=you. But the idea of MfM is kinda cool if you dont care about f and M2 or you love f a lot and you want her to explore new things, and you want to explore that too, kinda stag, and stag is not a beta-gamma male, in this case man can still be alpha.. anyways, it is getting complex to explain, but i am sure you know this. It is also very interesting, especially, if f is submissive, so you can explore the bdsmish things.
So first find f, get to know her closely at least once. Then find M2 and meet with M2 for a cup of tea, obviously, nothing else. Then arrange M2 to meet f closely. Then meet all three for a cup of tea, actually, 3 cups of tea.
Then meet for the action all three of you. Maybe you already know who f would be 🤣?
It all needs at least 3-4 days to make it work very nicely and smoothly, unless, as I said, you already know who f would be and know/met her, do you?/did you? 🤣
Good luck, ANYWAYS ! 🤣
LET US KNOW THE OUTCOME