It's kind of hard to unlock certain routes, but I noticed that the Ingrid route makes it really hard to also get guys. This means there doesn't seem to be any way for all three girls to go with the guy after the party, as by then the necessary Ingrid flags have resulted in les only.
My personal canon route is double date, then Ex, then breakup, then party, then afterparty foursome + Ingrid gf, then return of Ex, all while Jon is being sissified*. None of this is possible ig ofc due to route exclusivity but still.
*Hinted at when clothes shopping that Jon likes girly clothes.