My personal favorite dynamic is a (relatively) innocent Rowan and a highly corrupted but still loyal Alexia. I like to imagine Rowan sticking to his principles and thinking he can get out of this situation without sacrificing anything. Meanwhile Alexia is taking the more pragmatic route and doing anything she needs to to keep them both save, morals be damned. I have both characters sleep around but with different criteria. Rowan sleep with (mostly) safe NPCs that either seem to be mostly on his side or seem like they can be won over. Alexia sleeps with NPCs that can potentially offer protection or some other benefit for herself or Rowan, even if they are not "safe."
It is worth mentioning though, that there is no way to see all the content of this game in a single playthrough. While there is generally more sexual content if you throw caution to the wind and fuck everyone you can, there are a number of scenes or scene variations that require the character to have low corruption to trigger them. Plus there in a certain amount of RNG to many scenes as well so they might not even show up on a given run.
Personally, I would say that if you really like the game it is worth playing through 2-4 times picking drastically different choices. You can fast forward through previously seen text so it doesn't take to long. Then just pick you favorite paths as your personal canon for the story.
Looks like you encountered a bug. For most of these error screens it is safe to press "Ignore" and continue on. But I would recommend PMing
Rein (one of the game devs) and reporting the error. If you choose to report it, try to include as much detail as possible about what lead up to encountering the error.