let's say the LIs basically ignore each other, particularly in the fourth chapter where Jill, in any case, and Sage or Bella, depending on whether chosen as a refuge, know about MC's emotional turmoil but decide to never delve into it
Josy takes 3 chapters to ask MC if he's still seeing Jill, and she's the only one who interacts with him in that regard anyway
in the sixth chapter both Maya and Josy show some jealousy towards Sage, but it seems more motivated by the immediate choice to have lunch with Sage than by any precedent
if Sage and Josy were even vaguely aware of each other the choice to take turns romancing with MC during the same HOTs party in the garden would be pretty fearless