Inspired by the Japanese dating sim genre, include a PvP mechanic to score and track how successfully others gain Your trust and affection.
I'm picturing a prompt that arises after interactions with Other bodies. It asks the player to score the other
Typically both players will be secretly scoring each other after each interaction. The relationship score or level can perhaps open up various options commands etc.
Everybody has a number of attributes and a degree of personal insight. Everyone also has their own level of perspicacity allowing them to deduce the attributes of others. Finally everybody also may give out implications to suggest their qualities to others. They have to option to be honest (in so far as their own insight allows) or deceitful, implying to otherbodies that they have qualities in degrees other than the truth.
Trust will accrue when a body's airs are proven through experience and deeds. That is, a body who lets on that they are particularly capable of a thing will gain the trust of others who get to witness them actually doing that thing.
Trust can be exploited.
Insight is the accuracy with which you know your own attributes. Everyone has an opinion but only those with great insight can honestly say exactly how strong their strengths are and how serious their weaknesses and vulnerabilities are.
Intimacy is multi-faceted. I think it is based at least upon trust, interest, ... (lets do a little research).
First thing we'll need to do soon is update the spellcheck here to accept that word. Eunoia is a word meaning good feeling toward. It would be a great candidate to replace "intimacy" as a singular stat. Or on the other hand it might make for a title for a sub-game.