city rep bleeds into other reps. So you get city rep you will get a little pav rep.
But my point is I looked at the code and it should be impossible to get that far alone with out first either buying items on 10 different days or having a high enough slut rep.
So something weird happened with your game, either it bugged out after you bought enough to unlock part of the quest and somehow got reset until you bought more or you slut rep was briefly high enough.
I legit only have one glamour model point in Pav (Glamour model = 1).
City Slut is 42 (sex = 1, and Prostitution = 85) now but the save is a while after Olu.
I only started Prostitution after getting Olu to fire since I focus on one thing at a time, so I only had the one sex point in City at the time I started the Olu questline.
(Also in City have Glamour model = 28 but zero performer, and Porn actor = 2 but zero sex industry.)
No points in village or old town.
The only thing that could have triggered it was items. Like I said, I bought a TON. I had an auto clicker going to just buy a boat load of stuff, and it wasn't even on a day the aunt was working.