Ji!To be fair, I did not yet complete the whole available playthrough. Seems like indeed the authors have written in an actual love interest path for Felicia. Ngl, it's kind of a bummer to know that a later scene will reveal that most of her character is a "facade" hiding a girl desperate for love and connection. I guess I have imagined her differently but I will see when I get to scene in question.
I think you see it a bit too black and white concerning Felicia. Parts of her facade are also part of her inner persona, just not completely. For instance, while Felicia likes having sex (there is no difference on this with her outside and inside persona), she hides often how intelligent and creative she is. Feli is one of the most intelligent characters in the game, but few know or recognise this fact.