The first page is dedicated to his up-to-date general formula for how much the "relationship number" changes depending on interactions. There seem to be two, actually, with the second one labelled as "romance/sex" and a comment saying "NTS: explore this when it feels less ick", but most of the work was done on the first number.
The number has a floor and a ceiling, which he arbitrarily set to -100 and 100 respectively, and the delta per interaction depends on the current number, "interaction type", a modifier for the subject's interest in the topic, a "mood" modifier that affects the effect of the interaction type, and one final modifier that he called "recent interaction" but which has another comment saying "NTS: needs more refinement, see section D".
The next several pages include an extensive categorisation of interaction types with commented examples and some sections on whole bits of interaction transcribed after the fact. Each type has a base value and a modifier value for whether the subject is neutral, mildly positive/negative, or very positive/negative on the topic.
After that he elaborates on the other modifiers, which seem to be multiplicative and which have multiple notes about needing more research on this specific thing or that.
And finally the whole second half of the document is taken by speculation on the meaning of each value band and predictions that can be made based on them. There's a threshold for when people start spontaneously calling you, and then various bands like "if the value is between 20 and 50 the subject stops reacting negatively to mentions of topics they find mildly negative, if it's above 50 they also reduce their reactions to very negative topics to the same they used to have to mildly negative ones". He's registered observations that led to each of those estimates and predictions, as well as observations that conflict with them, with some speculation on reasons and assumptions that may have been broken.
Finally, at the end, he has an extensive list of things to try at some point, with particular emphasis on ideas that can falsify specific assumptions and predictions by the model.
The whole document is clearly meant to be used by him, with notes to self being very common and paragraphs not caring so much about broad readability or non-redundancy. Still, it's pretty well-organised, with headers and subheaders that can be clicked on from the document's table of contents and comments labelled as things like "speculation" or "evidence" or "unconfirmed prediction" or "test to formalise" or similar.