Hmm i have no idea, but did your Lena mention Eli at all in your game? Because this depends on how well their interaction went during Lena's shift at the club, in Ch.11 (
v11_bar4 == 3
condition)
If you're not getting this text about her:
Python:
"I had been texting back and forth with Eli, the girl I had met working at Blazer."
"She had shown interest in meeting me, saying she'd like to come to my next concert."
l "I have the feeling she'd like to be more than just my friend... I wonder if she's into me?"
l "I've never had a casual hookup with a girl... It could be a fun new experience."
Then they didn't click enough back then.
edit: also, re-checking the script, that comment about possible threesome depends on whether Lena/Ian have "open relationship" not if they've had a threesome with Louise. Although i don't think it's possible to have one without setting the variable... but would need to double-check to be sure.