Someone can correct me if they've found differen't. I think you need to do the three IR porn scenes as scripted, and of course after the first time viewing the final one she asks if she can keep the other dudes #. I said yes, then slept one day at my place, and then passed time, and got a text from Krissy of all characters. She mentiones Lydia not hanging with her as much on fridays. so speed up to friday, and in the evening like 1700 or 1800 go to lydia. You will get two options involving with Lydia or Christine, choosing Lydia gives you two different scenes you can peep in on, and I say two because there are two different setups that can happen based on Lydia's porn stuff and her office stuff. If there is anything else I couldn't find it, but it was a decent unlisted cap off to this particular character arc (Lydia's infidelity)
Personally I was surprised by this update. I remember years ago making a comment about Lydia possibly getting swayed by an ex lover of her mother. And while it wasn't exactly that, it was very similar to what I was thinking of. Lydia was always my favorite, and the only content now I wish that got a capstone, was a now post released Lydia with the truth and dare stuff. The capstone on Lydia's home scenes didn't all rub me the same way, like the maid work one I thought was boring, and it feels weird going further with Christine now, and not much changing in the overall family dynamic, or at least Lydia being sort of numb to her mother's escapades with her boyfriend.
But overall a smaller but decent update. If you wanted more of the author's version of NTR, it's decent. If you wanted more Lydia but love/lewd route only, it's decent. ANd if you had been waiting for scenes with Christine, there is finally some meat on those bones.