Since you are so good building alternative paths, I would suggest something if you don't mind. You said you feel Mila's personality empty at some point of the BBC route, maybe you could use exactly this hook during the couple conversation, when Mila opens her up to Paul and he decides to support her in some way to make her happy again (this would change the BBC NTR into NTS, but who cares about the nomenclature

). Then she drags Paul to her world, bringing back to Mila that spark that did lose along the way. Both would feel alive again at their own way, with Mila doing the utmost depraved sex that she never imagined, and Paul living with his new reality

.
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