I am pretty sure it will as a variable was set in the code. Way back when I posted a theory somewhere that you can get Sage and still be friends with Chad and even be a coming out/matchmaker for him
On the Prep points, I did find where I posted it (
here). Summary of "
guess": Because the prep points are
not Tybalt points. At the end of the game, if on the Jill path, good relationship points with the Preps will result in Tybalt eventually being humiliated and rejected by his peers (which will serve as his end-game comeuppance). Bad relationship with the Preps will result in Jill being eventually evicted from her residence there (if on a romance path with MC).
On the DIK relationship points: A civil war is inevitable. MC's relationship points with the DIKs and other actions (like whether you paid for 1 of the brothers at the strip club etc. ) is going to determine who's on MCs side and who's on Tommy's side.
My current theories/guesses anyway.