@Blue_Robin it's moreso that they know that their existence is thanks to her, they're naturally bound to her. if anything I think their feelings are legitimate. blonde initially thought he had to gain favor, but then it turned into infatuation because he is surrounded by well-equipped people, he wants to get better (though it could be for self-improvement) her approval is his goal.
redhead is just intrigued by his current situation. meeting an old face and such. he likes how he is humored and is reciprocating it with affection.
silver has seen the protagonist's growth. their relationship is what they make it to be, it's probably the only one that isn't reasonable and is just love for the sake of love. he feels responsible and is basically her guardian. perhaps he is alarmed that the other two are acting as intimate and is seeing that his relationship with MC is more ambiguous than he originally saw it
aside from these people. you see that the architect is just grateful for this second chance. lipton? orange tea is just unfortunate to be stuck with paperwork and a wild superior (redhead). and the soldiers are acting independently.
beauty is their propaganda so it's easy to mix their exhalation with love. this series is religious themed by nature.
I think it's fine for our protagonist to be straightforward with her desire, and when she has receives reciprocation- she feels somewhat baffled (but not shy) or easily forgets the "at the moment" moment because their is a strong sense of alienation as a- I don't know, other worlder? this is her reality but it's easy to take for granted that she is a apostle of beauty and is surrounded by such.