She you were expecting mff, but instead it's mmf

A girlfriend, asking her gay(lesbian) best friend, to participate in a threesome with her boyfriend is nothing short of a universal impossibility. That's why guys can only hope for that kind of thing to happen in their dreams.

No. That's exactly mine and my friend's thing. Except she has a partner now.

Then they're defying science

We are*

I'm no expert, but unless something really fucked up happened to me, causing very vivid hallucinations, I can confirm two women and a guy is a real thing.