Through the Clone series, however, we can assume that DPC has dealt with it and practiced on the poses for such scenes. Ergo, it will come.
I think with but so that a MMF for a DIK MC will be exclusive. I also rule out Josy, Maya and Jill for an MMF because they are CHICK girls.
With Isabella, Sage and Quinn (representing the OTHER Girls) I can see so that could happen. Isabella herself thinks of a MMF in her EP4 Branch, that's why I think so she already did something like that with James in her past. Sage is experimenting joyfully and already had a double penetration with Quinn and the MC. In EP9, after Sage has sex with the MC, the two have a conversation. In this conversation it is implied that Sage would try a MMF. I see two variations there. Tommy, MC, Sage and/or Chad, MC, Sage. Why Chad. Chad already makes it clear in EP1 so he's into the MC's ass, so gay Chad gets a hard-on when he sees denn MC naked and can then fuck Sage. To Quinn and the OTHER Girls one must explain nothing.