Just why three different theories of why the prince changed. There's no real hints yet as to why he's changed but based on that weird smile he had after he told the FL he was gonna give her a dress + the FL mentioning a past love: Man is the dude she used to love and either a) Isekaied into the prince body like FL or b) is the reincarnation of the past lover and regained his memories.
The neutral theory is that og!FL is an unreliable narrator and the prince always liked og!FL but didnt know how to show it (doesnt change him being shitty tho) and when og! FL got hurt, he changed his ways do when our FL woke up hes trying to be more open now.
The less nicer theory is that somehow man thinks being acting smitten with the FL will make the FL break up with him.
I think she lost her memories either bc of a deal with god OR (and this is even more outlandish, Mao had something to do with it). She dreamt of the fantasy world bc that's her memories being unsealed. Reincarnation feels like a plot hole or just really weak. for someone who went back to their world is a bit weird for her to die in that time spam and reincarnated into someone vs her aging to exactly what she would be if time passed normally.








Spoilers:
I like the foreshadowing in the story so far. Once you know they've been in a timeloop, some of the dialogue and scenes make sense like the stairs dream.