You know, there is one interesting thing in your post!
Even though you tried to dismiss it with sarcasm, it's most likely sex whit Ari is planned out, as you said, by Vi and Ari.
There is one fact:
Ari sends Eric a selfie on his phone while he's at the mall with Anya. Where is she in a green revealing lingerie set, when Eric arrives at her place, she is wearing the same set of lingerie.
This gives rise to a theory:
Maybe Vi was already planning to do something at the photo shoot, maybe she went with the clear thought that she would at least suck Bruce off, but she didn't know for sure yet, and when she crossed the line, she warned Ari and gave her the green light. She wrote to Eric that she had done something bad and that he should quickly get to Ari.
But the question is where is Vi at this time?
Eric slept for a long time, the dev doesn't show us his and Vi's texting at the mall. We see this correspondence only from Vi's perspective, when she is already in the photo studio.
The timing of their texting is when Vi went to change into her first outfit.
Eric and Anya had a lot of time while she tried on clothes and their introduction to new characters. At this time, Vi managed to shoot in two outfits that we see and did something bad in the third outfit when Luke came, but when Luke came, she was still in the second outfit.
The photos what she sends to Ari are clearly not selfies, they were taken by Bruce.
The first two photos are the final material, the rest have been edited, fragments have been cut out, this is obvious:
Bruce completed the photo session and sent the material to Vi, then she edited the photos herself.
I hope that the dev, along with the fixes and additions, will extend the end of the update a little and everything will become more or less clearer.