Peeking in the code, it seems that if you side with Stan in this discussion i.e. pay new rent in full, afterwards Lena will go to Louise and potentially have sex with her even if Louise was rejected:
Python:
## end discussion (sided w/stan)
else:
if lena_reject_louise:
"It seemed Louise couldn't help but create drama out of everything... I was starting to get tired of it."
# end day
if ian_lena_dating and v10_lena_mad != "stalkfap" and v10_lena_mad != "sex":
# ...
jump v10lenasaturday
# go to work
else:
#...
jump v10lenafridaywork
Given the comments and comparing it with the flow in the other branch, the one where Lena sides with Louise, i'd guess this is a bug and unintended behavior.
PilotLara perhaps it's worth checking (if it wasn't already fixed in 10.4) -- the second
if
in the quoted bit should probably be
elif
so that the sex scene doesn't trigger if Lena has rejected/dumped Louise previously?