Honestly, the NTR label at this point is kind of trivial anyway. Basically every 2nd character was, or is ntr-ing or getting ntr´d one way or another, no? Even Ian parents are cucking each other ffs
![ROFL :ROFLMAO: :ROFLMAO:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It´s not like it would be an outlier if Holly was included in that (at some point). Technically speaking, isn´t Holly already "cheating" on Ian with Ivy?
Either way, Holly is cleary the most corruptible NPC. If you take the Ian relationship out of the equation, Lena and Ivy can have multiple 3somes with her, hook her up with Mark, twice. Encourage her to hang out with Stan, set up a hook up with Robert. From here what can we expect her progression on that route to be? 3-some with Lena+Mike, Lena+Robert, Lena+Louise, Marcel guy is bound to happen, next up drugs and bj´s in the club toilet and modelling for Billy. Also remember the "having sex with a hot stranger" confession.
So if you put that version of her in a relationship with a version of Ian that is still not over Gillian and generally beta, then fast forward it 1 or 2 chapters, I don´t see it as too far fetched for her to be talked into cheating by Lena/Ivy at max corruption, as an alternative to simply breaking up, etc. but as was said, not in the way or at the time it was presented, which was clearly a bug.
I´m not advocating it, just saying that it could have been a spicy sub-route that is unlinkely to happen.