If all we need is a short PDF, then "Bam!"
EDIT:
I should note that after making this PDF, I became aware that there is another slightly different way to reach the poly ending. Specifically, in Chapter 6, you can tell Mallory "Let's just play it by ear for now" instead of "I thought this was about helping you". You must still tell Jaye "I want all the things".
This temporarily puts you in an Open relationship with Mal and then an Intimate relationship with Jaye. Later on when Mal and Jaye encounter each other in the hallway outside MC's room, Mal automatically shifts from Open to Friend. So you end up in the same approximate place as the method I mention in the guide, just with slightly different points.
In any case, it is good to know the option exists, since at least to me it feels a bit more honest and less harsh on Mal.
